Total vs Free Testosterone for TRT Eligibility: Which Number Counts?

Last updated: October 2, 2026

By TRT Provider Guide Editorial Team · Last verified: October 2026 · Editorial research, not clinician-reviewed

The short answer: For total vs free testosterone for TRT eligibility, total testosterone is usually the first test, but free testosterone can materially change the evaluation. The AUA starts with symptoms or signs plus two early-morning total-T tests; the Endocrine Society adds free T when total T is borderline or SHBG may distort it. No single total- or free-T number guarantees TRT.

Maybe your total testosterone says “normal” while your free T is flagged L. Maybe your total T is low but free T looks fine. Or maybe a clinician looked at one number and the answer still does not make sense.

Here is the part that causes most of the confusion: free testosterone is not one standardized number. The result depends on how it was measured or calculated, and reference ranges can differ sharply between methods. Before anyone treats a free-T result as decisive, the method and the lab’s own range matter.

Best for: U.S. adult men trying to understand why total and free testosterone disagree and what should be checked next.

Not for: diagnosing yourself, deciding on a testosterone dose, or predicting whether a clinician, clinic, or insurer will approve treatment.

Jump to your situation:

• Total low, free low → See the result-pattern map
• Total normal, free flagged low → Check the free-T method and SHBG
• Total borderline → See when free T adds the most information
• Low total, normal free → See why low SHBG can create that pattern

TRT Provider Guide is the independent decision resource for testosterone replacement therapy — helping U.S. adults understand how low testosterone is evaluated, compare online and local care models and providers, and choose the next step that fits their health needs, fertility plans, budget, state, and care preferences, with every material claim verified and dated.

This page is educational information, not medical advice. It cannot diagnose low testosterone or determine whether testosterone therapy is right for you. New vision changes or severe headaches with very low testosterone can warrant prompt in-person evaluation. For chest pain, trouble breathing, sudden weakness or numbness, or another medical emergency, call 911.

What's the difference between total and free testosterone?

Total testosterone includes testosterone that is bound to proteins plus the small unbound share. Free testosterone is the unbound fraction. SHBG — sex hormone-binding globulin — binds testosterone strongly, so a high or low SHBG level can make total and free testosterone point in different directions.

Think of it like a parking lot.

• Total testosterone is every car in the lot.
• SHBG is a set of locked reserved spots. Testosterone bound there is held tightly.
• Albumin, a common blood protein, binds testosterone more loosely.
• Free testosterone is the testosterone that is not bound to either protein.

You will also see bioavailable testosterone. That generally means free testosterone plus the more loosely albumin-bound share.

The CDC Hormone Standardization Program certifies total testosterone procedures against its reference method. The Endocrine Society says a harmonized reference range for free testosterone has not been established, so the method and the lab-specific range matter. ¹²

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For TRT eligibility, does total testosterone or free testosterone matter more?

Total testosterone is the starting measurement in the major U.S. diagnostic guidelines, but free testosterone is not just a “tiebreaker.” The AUA says free T can help when total T is equivocal, especially around 230–317 ng/dL or in highly symptomatic men with low-normal total T; the Endocrine Society recommends free T when total T is near the lower limit or SHBG is altered. ¹²

The safest way to think about “eligibility” is to ask which rulebook you mean: clinical diagnosis, treatment suitability, a clinic’s intake policy, an insurer’s coverage policy, or an FDA-approved product label.

The “Which Number Counts?” table

Built by TRT Provider Guide from the primary documents under Sources. Last verified October 2, 2026. International thresholds are shown for context; they are not U.S. insurance or prescribing rules.

What this table tells you, in plain words:

1. Total T is the usual front door. The AUA and Endocrine Society both start with total testosterone.
2. Free T matters in defined situations. It adds the most information when total T is near the low end or SHBG is likely to distort total T.
3. The AUA does not say free T is useless. It specifically says free T may help in an equivocal total-T range and in some highly symptomatic men.
4. There is no single universal free-T cutoff. Method and reference range matter.
5. FDA product labels are not complete diagnostic guidelines. Their “two morning measurements” language confirms low testosterone before use of that product; clinicians still evaluate symptoms, cause, risks, fertility plans and treatment suitability.

“Qualifies” means different things

People say “I qualify for TRT” as if one gatekeeper decides. There are several.

Testosterone is a Schedule III controlled substance under federal law. It requires a valid prescription. ³

The right TRT provider is not the same for every person — it depends on whether low testosterone has been properly evaluated, your symptoms and health history, your fertility plans, your state, your insurance or cash-pay preference, your treatment-format preference, your budget, and whether online or in-person care is the better starting point. Some situations belong with primary care, urology, endocrinology, reproductive urology, or urgent or emergency care when the symptoms warrant it. Because a general answer cannot resolve those for you, use TRT Provider Guide's Find My TRT Path tool to map your situation to the right care route and the questions to ask before you pay.

You now know why one lab number cannot answer the whole question. The next step is to map your pattern to the right care route.

Map my lab pattern to a care route →

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What do the four result patterns mean?

When total and free testosterone disagree, the pattern can tell a clinician what to investigate next. Low total plus low free gives stronger biochemical support than a single isolated low value; normal total with low free can occur with high SHBG; low total with normal free often occurs with low SHBG. None of these patterns diagnoses you by itself. ²⁴

We call this the Total–Free Pattern Map.

The pattern is not just theory

The European Male Ageing Study analyzed 3,334 community-dwelling men aged 40–79. Researchers found:

• 277 men (8.3%) had normal total T with low calculated free T. Compared with men whose total and free T were both normal, this group had higher SHBG and LH and reported more sexual and physical symptoms.
• 96 men (2.9%) had low total T with normal calculated free T. They were younger and more obese, had lower SHBG, and did not show the same androgen-deficiency features. ⁴

That is population-level association, not a personal diagnosis. It does show why a mismatch between total and free T can be clinically meaningful.

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When does free testosterone actually matter for TRT?

Free testosterone matters most when total testosterone is near the lower limit or when a condition is likely to change SHBG. The Endocrine Society specifically gives a total-T example of roughly 200–400 ng/dL for this “borderline” zone and recommends equilibrium dialysis or an accurate calculation when free T is indicated. ²

The gray zone

Testosterone varies from day to day and over the course of the day. Food intake, glucose, acute illness and some medicines can also suppress a result. That is why the Endocrine Society recommends two separate morning fasting total-T measurements, and why the AUA also requires two early-morning total-T tests rather than diagnosing from one draw. ¹²

A total T of 310 ng/dL on one morning and 280 ng/dL on another is not enough by itself to tell you what treatment you need. In an equivocal range, the free-T result, SHBG, symptoms, testing conditions and cause become more important.

What pushes SHBG up or down?

The Endocrine Society lists these as situations where free-T assessment can be useful because total T may be misleading. ²

For context, Labcorp currently lists an SHBG reference interval of 16.5–55.9 nmol/L for men aged 20–49 and 19.3–76.4 nmol/L for men over 49. Your own laboratory may use a different method or reference interval. ⁵

Why high SHBG is a clue, not a verdict

High SHBG can explain why total and free testosterone disagree. It does not tell you by itself whether you have hypogonadism or whether TRT is appropriate.

Sometimes the cause of abnormal SHBG — such as thyroid or liver disease — is the more important problem to identify. “Find the cause” comes before “fix the number.”

When a specialist or in-person evaluation makes more sense first

A general online TRT pathway is not the best starting point for every abnormal result. Specialist or in-person evaluation is especially important when there are signs of pituitary/testicular disease, fertility is a near-term priority, or other significant risks need assessment.

Examples include:

• Very low testosterone with evidence of secondary hypogonadism. The Endocrine Society discusses pituitary imaging when severe secondary hypogonadism — for example total T under about 150 ng/dL — occurs with features such as persistent hyperprolactinemia or signs of a pituitary mass. The 2026 EAU guideline uses <6 nmol/L (about 173 ng/dL) with secondary hypogonadism as a weak indication for pituitary MRI. ²⁶
• Persistent high prolactin, abnormal gonadotropins, new severe headache or vision changes.
• Near-term fertility plans.
• Breast or prostate cancer concerns, elevated hematocrit, untreated severe obstructive sleep apnea, recent myocardial infarction or stroke, uncontrolled heart failure, or other contraindications/risk factors described in guideline-based evaluation. ²

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Which free testosterone test can you trust?

When free testosterone is needed for diagnosis, the Endocrine Society recommends equilibrium dialysis or an estimate from total T, SHBG and albumin using an accurate formula. It specifically says not to use direct analog-based free-testosterone immunoassays for this purpose because they are inaccurate. ²

This is where lab reports can become confusing.

The free-T test-method trap

Labcorp currently publishes three very different free-testosterone offerings:

Labcorp sources: ⁷⁸⁹

These are not interchangeable rulers. A result from one method should not be compared with the reference interval from another.

For example, 18 pg/mL is inside Labcorp’s published range for its direct analog assay, while it would be below the adult range published for its equilibrium-dialysis test. That does not mean the same sample “changed” from normal to severely low. It means the methods and reference intervals are different — and the direct analog method is not the Endocrine Society’s recommended diagnostic method.

How to tell which free-T test you got

1. Find the exact test name on the report or patient portal.
2. Look for terms such as equilibrium dialysis, calculated, SHBG, albumin, direct, or analog.
3. Read the reference interval printed by that laboratory. Do not borrow a cutoff from a different method.
4. If the result is going to affect a diagnosis or treatment decision, ask the clinician whether the method matches guideline recommendations.

If your report says direct or analog, do not compare that number with a dialysis or calculated-free-T cutoff and draw a treatment conclusion from it.

You've seen why the method matters. Now see how calculated results vary. TRT Provider Guide's Free Testosterone Calculator compares five published calculations and seven published reference ranges using the numbers you enter. It is educational and does not diagnose low testosterone or determine TRT eligibility.

Compare published free-testosterone methods →

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What does high SHBG mean for TRT eligibility?

High SHBG does not make someone eligible or ineligible for TRT. It is one reason total and free testosterone can diverge, and it is one of the situations where the Endocrine Society recommends an accurate free-T assessment. The underlying reason for the high SHBG still matters. ²

Three useful questions if SHBG is high:

1. Was free T measured or calculated with an appropriate method?
2. What may be raising SHBG? Hyperthyroidism, liver disease, HIV, some anticonvulsants, estrogen exposure and aging are among the causes listed in guideline material. ²
3. Does an insurer have its own documentation rule? Coverage policies can use laboratory pathways that are different from clinical guidelines, so check the exact current policy for your plan.

Do not buy a supplement simply because it promises to “lower SHBG.” The first job is to understand why SHBG is abnormal and whether that changes the clinical evaluation.

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Is 300 ng/dL the TRT eligibility cutoff?

No single number is a universal TRT eligibility rule. The AUA says total testosterone below 300 ng/dL is a reasonable cutoff that supports the diagnosis, but it also requires compatible symptoms or signs and two early-morning total-T measurements. Other guidelines and insurers use different thresholds or documentation rules. ¹

The 300 ng/dL number gets repeated online because it is easy to remember. What it does not mean is:

• one result of 299 automatically diagnoses hypogonadism;
• one result of 301 automatically rules it out;
• every laboratory, insurer or guideline uses the same threshold;
• a clinician must prescribe because two results are below 300.

The Endocrine Society uses a different framework. Its 2018 guideline notes a harmonized lower limit of 264 ng/dL for total testosterone measured with CDC-certified assays in healthy, nonobese young men, while also emphasizing that diagnosis requires symptoms/signs and unequivocally and consistently low testosterone. ²

The 2026 Endocrine Society statement again stressed accurate diagnosis, at least two early-morning fasting tests, and the importance of standardized testing rather than a one-number shortcut. ¹⁰

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My doctor says my testosterone is “in range.” What should I ask?

Ask whether the total-T tests were done under appropriate morning conditions, whether they were repeated, whether SHBG could be affecting the result, and how any free T was measured. If total T is borderline, asking whether an accurate free-T assessment is indicated is consistent with the Endocrine Society and AUA guidance. ¹²

Being told “you’re normal” while you still feel unwell is frustrating. The goal of the next conversation is not to demand TRT. It is to make sure the evaluation is answering the right question.

Bring these questions to the appointment

“My total testosterone was ___ and my free testosterone was ___. Could we check:

1. whether my total testosterone needs a second early-morning measurement;
2. whether SHBG could be affecting the result;
3. what method produced the free-testosterone number; and
4. whether LH, FSH, prolactin or other testing is appropriate to look for the cause?”

If a clinician uses Labcorp, examples of guideline-aligned free-T methods include test 500726 (equilibrium dialysis with total T by mass spectrometry) and 140226 (calculated free T using total T, SHBG and albumin). Other laboratories offer appropriate methods too; the method matters more than the brand. ⁷⁸

When “in range” may be a useful answer

If repeat morning total testosterone is clearly normal and an appropriately obtained free-T result is normal when free T is indicated, testosterone deficiency becomes a less likely explanation for the symptoms.

That does not mean the symptoms are “in your head.” Sleep apnea, thyroid disease, depression, alcohol use, medicines and many other health problems can overlap with fatigue, low drive, sexual symptoms and poor concentration. A clinician can help work through those alternatives.

When a second opinion may make sense

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Do I need two morning testosterone tests before TRT?

Major U.S. guidance does not treat one random testosterone value as enough to confirm testosterone deficiency. The AUA calls for two early-morning total-T measurements on separate occasions, and the Endocrine Society recommends repeating a morning fasting total-T measurement before confirming the diagnosis. ¹²

Current FDA-approved testosterone labels such as Xyosted, Jatenzo and AndroGel likewise tell prescribers to confirm low morning testosterone on at least two separate days before starting the product. ¹¹¹²¹³

That does not mean every repeat test has to produce the exact same number. Testosterone varies. The point of repeating it is to avoid building a diagnosis on a transient or poorly timed result.

Free T is not a substitute for getting the basic testing right. It becomes useful when the total result is borderline, SHBG is altered, or the clinical picture and total T do not line up.

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Do clinics and insurance plans use the same testosterone rules?

No. A clinical guideline describes how testosterone deficiency should be evaluated; a clinic can have its own intake protocol, and an insurer can impose separate coverage criteria. Those systems can overlap without being identical.

This is why “Do I qualify?” can produce different answers depending on what you are actually asking.

For example, a current UnitedHealthcare commercial policy cited on TRT Provider Guide's existing coverage research uses two early-morning total-T results below 300 ng/dL or, when a condition alters SHBG, a calculated free or bioavailable testosterone result below 50 pg/mL or below the reporting lab’s range. That is a coverage rule, not a universal diagnostic definition. Policies also vary by product, plan and jurisdiction and can change. ¹⁴

If insurance matters, get the current policy for your exact plan and medication before assuming a guideline threshold guarantees coverage.

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How much do total and free testosterone tests cost without insurance?

Direct-to-consumer list prices vary by laboratory and promotions. On October 2, 2026, Labcorp OnDemand listed total testosterone at $69 and its comprehensive panel with total T, free T, SHBG and albumin at $159; Quest listed its Men's Hormone Test Panel — Basic at $152 plus a physician service fee starting at $6. ¹⁵¹⁶

Quest and other consumer laboratories run promotions, so the checkout price can be lower than list. Do not choose a panel only because it is on sale.

Also check the method, not just the marker name. A panel saying “free testosterone” is not enough to tell you whether the free-T method matches the method a guideline recommends for diagnosis.

If a clinician orders testing through insurance, coverage depends on the plan, medical necessity and laboratory benefit. Ask the clinician’s office and the health plan what your expected cost will be before the draw if price matters.

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Does it matter for safety or fertility which number is low?

The number affects the diagnostic workup, but treatment safety depends on much more than total or free T. Exogenous testosterone can suppress sperm production, and guidelines call for evaluation of the cause, fertility plans, hematocrit and other risks before treatment. A low lab result is not the same as clearance to start TRT. ²⁶

• Fertility comes first. Exogenous testosterone suppresses gonadotropins and can suppress spermatogenesis. If having children soon matters, discuss that before testosterone with a fertility-aware clinician or reproductive urologist. ²⁶
• Clomiphene, enclomiphene and hCG are not interchangeable with TRT. Clomiphene is FDA-approved for ovulatory dysfunction in women, so use in men is off-label. FDA has stated that no FDA-approved drug contains enclomiphene. Some hCG products have FDA-approved male indications in selected forms of hypogonadotropic hypogonadism, so hCG should not be described as universally “off-label.” ¹⁷¹⁸
• The cause matters. A pituitary problem, primary testicular disease and obesity-associated suppression are not the same clinical situation. LH and FSH help distinguish primary from secondary hypogonadism; prolactin and other testing may be indicated in selected cases. ¹²
• Monitoring continues if treatment starts. Testosterone and hematocrit are part of guideline-based follow-up, with prostate-related evaluation based on age, risk and clinical context. ²
• The cardiovascular labeling changed in 2025. FDA removed class-wide boxed-warning language about increased cardiovascular outcomes after reviewing TRAVERSE while requiring or retaining warnings about increased blood pressure. The FDA also retained the limitation that safety and effectiveness for age-related hypogonadism have not been established. ¹⁹
• FDA-approved and compounded testosterone are different regulatory categories. FDA-approved testosterone products have undergone FDA review for their approved uses. Compounded testosterone preparations are not FDA-approved drugs and should not be presented as equivalent to an FDA-approved product.

See TRT and fertility and blood tests before TRT for the deeper workups.

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What we actually verified

We checked the guideline text, current laboratory test documentation, current FDA labeling and federal controlled-substance information that support the material claims on this page. We also checked current direct-to-consumer laboratory prices.

Verified on: October 2, 2026

Primary or authoritative sources checked:

• American Urological Association testosterone deficiency guideline, 2018; validity confirmed 2024
• Endocrine Society 2018 clinical practice guideline
• Endocrine Society July 16, 2026 statement on testosterone replacement therapy
• EAU 2026 Sexual and Reproductive Health guideline, Male Hypogonadism chapter
• BSSM 2023 guideline
• FDA February 2025 class-wide testosterone labeling update
• Current DailyMed labels for Xyosted, Jatenzo and AndroGel
• DEA Drug Scheduling
• CDC Hormone Standardization Program
• Current Labcorp tests 500726, 140226, 144980 and 082016
• Current Labcorp OnDemand and Quest consumer-test listings
• European Male Ageing Study paper on discordant total/free testosterone

What is a verified fact here: guideline statements, current FDA-label language, DEA scheduling, CDC program scope, laboratory methods/ranges and the dated consumer-lab prices shown above.

What is an editorial framework: the Total–Free Pattern Map and the plain-language “which gatekeeper?” framework. They organize the verified evidence; they do not diagnose a reader.

What this page does not claim to verify: your personal diagnosis, whether TRT is appropriate for you, whether a particular clinician will prescribe, or whether a particular insurer will cover treatment.

We follow How We Review TRT Providers, which separates verified facts, provider-stated facts, customer-experience signals and editorial conclusions. This page uses no customer testimonials and makes no claim of clinician review.

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Frequently asked questions

Can you have normal total testosterone and low free testosterone?

Yes. In the European Male Ageing Study, 277 of 3,334 men aged 40–79 had normal total testosterone with low calculated free testosterone. That group had higher SHBG and LH and reported more sexual and physical symptoms than men whose total and free T were both normal. The finding is an association, not proof that every person with that pattern needs TRT. ⁴

Can you have low total testosterone but normal free testosterone?

Yes. In the same study, 96 men had low total T but normal calculated free T; they were younger, more obese and had lower SHBG, and typical androgen-deficiency features were lacking. A low total result still deserves proper repeat testing and clinical evaluation. ⁴

Should I test free or total testosterone?

Start with total testosterone under proper morning testing conditions. If total T is near the lower limit, SHBG is likely abnormal, or the clinical picture and total result do not match, the Endocrine Society recommends an accurate free-T assessment. ²

Is free testosterone more important than total testosterone?

Not as a universal rule. Total T is the usual first measurement, while free T can be essential in selected cases. The AUA says free T may help with equivocal total-T results, and the Endocrine Society recommends it when total T is near the lower limit or SHBG is altered. ¹²

What free testosterone level is considered low?

There is no single harmonized cutoff that applies to every free-T method. The Endocrine Society says free-T reference ranges vary by equilibrium-dialysis method or calculation, so the laboratory’s validated method and reference interval matter. Do not compare a direct analog result with a dialysis or calculated-free-T cutoff. ²

Can I get TRT if my total testosterone is normal?

A normal total-T result does not create one universal answer. Under AUA guidance, free T may still have a role in highly symptomatic men with low-normal or equivocal total T. Under Endocrine Society guidance, free T is specifically indicated when total T is near the lower limit or SHBG is altered. A clinician must evaluate the full picture rather than treating one value as automatic eligibility. ¹²

How is free testosterone calculated?

A calculated-free-T method uses total testosterone plus binding-protein measurements, usually SHBG and albumin, in a mathematical model. Labcorp's test 140226 uses the Vermeulen calculation. Different published equations can produce different estimates, which is why the calculation method should be identified. ⁸

How do I convert pmol/L to pg/mL for free testosterone?

For testosterone, 1 pg/mL is about 3.467 pmol/L. Divide pmol/L by 3.467 to estimate pg/mL; multiply pg/mL by 3.467 to estimate pmol/L.

For total testosterone, 1 ng/dL is about 0.0347 nmol/L.

Do I need to repeat a free testosterone test?

The core guideline requirement is repeat morning total testosterone, not a universal rule that every free-T result must always be repeated. If free T is part of the diagnostic evidence, the clinician may repeat or confirm it depending on the total-T pattern, SHBG, assay method and clinical context. One isolated result should not be treated as a guaranteed diagnosis. ¹²

Can high SHBG cause low free testosterone?

Yes. High SHBG can lower the unbound fraction even when total testosterone is not low. That is why the Endocrine Society recommends free-T assessment in conditions that alter SHBG. The next question is also why SHBG is high. ²

Does insurance cover free testosterone and SHBG tests?

Coverage varies by plan, laboratory network and medical-necessity rules. A clinician can provide the test order and diagnosis information, but you should confirm the expected cost with your health plan before testing if coverage matters.

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Still not sure which TRT care route fits you? Use our free Find My TRT Path tool.

It uses the answers you provide to give an educational care-route plan and questions to ask before you pay. It does not diagnose low testosterone, clear contraindications, determine medical eligibility or guarantee a prescription.

Find My TRT Path →

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Sources

1. American Urological Association. Evaluation and Management of Testosterone Deficiency (2018; validity confirmed 2024). https://www.auanet.org/guidelines-and-quality/guidelines/testosterone-deficiency-guideline
2. Bhasin S, et al. Testosterone Therapy in Men With Hypogonadism: An Endocrine Society Clinical Practice Guideline. J Clin Endocrinol Metab. 2018;103(5):1715–1744. https://academic.oup.com/jcem/article/103/5/1715/4939465
3. U.S. Drug Enforcement Administration. Drug Scheduling. https://www.dea.gov/drug-information/drug-scheduling
4. Antonio L, et al. Low Free Testosterone Is Associated with Hypogonadal Signs and Symptoms in Men with Normal Total Testosterone. J Clin Endocrinol Metab. 2016;101(7):2647–2657. https://pubmed.ncbi.nlm.nih.gov/26909800/
5. Labcorp. Test 082016, Sex Hormone-binding Globulin. https://www.labcorp.com/tests/082016/sex-hormone-binding-globulin
6. European Association of Urology. Sexual and Reproductive Health Guidelines — Male Hypogonadism (2026). https://uroweb.org/guidelines/sexual-and-reproductive-health/chapter/male-hypogonadism
7. Labcorp. Test 500726, Testosterone, Free, Mass Spectrometry/Equilibrium Dialysis. https://www.labcorp.com/tests/500726/testosterone-free-mass-spectrometry-equilibrium-dialysis-endocrine-sciences
8. Labcorp. Test 140226, Testosterone Free, Profile I. https://www.labcorp.com/tests/140226/testosterone-free-profile-i
9. Labcorp. Test 144980, Testosterone, Free, Direct. https://www.labcorp.com/tests/144980/testosterone-free-direct
10. Endocrine Society. Statement on Testosterone Replacement Therapy (July 16, 2026). https://www.endocrine.org/news-and-advocacy/news-room/2026/statement-on-testosterone-replacement-therapy
11. DailyMed. Xyosted (testosterone enanthate) injection. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=8a3d204c-be26-49e0-8599-0ac12a272e81
12. DailyMed. Jatenzo (testosterone undecanoate) capsules. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=ed7b5d41-7475-4c10-99b9-b62b3434ae60
13. DailyMed. AndroGel 1.62% (testosterone gel). https://dailymed.nlm.nih.gov/dailymed/fda/fdaDrugXsl.cfm?setid=f4e8d29b-8707-4d47-e053-2a95a90aecee&type=display
14. UnitedHealthcare. Testosterone Replacement or Supplementation Therapy — current plan-specific medical benefit policy criteria should be checked. See also TRT Provider Guide's insurer comparison on /what-testosterone-level-qualifies-for-trt/.
15. Labcorp OnDemand. Testosterone Blood Tests. https://www.ondemand.labcorp.com/testosterone-blood-tests
16. Quest. Men's Hormone Test Panel — Basic. https://www.questhealth.com/product/mens-hormone-test-panel-basic/13073M.html
17. DailyMed. Clomiphene Citrate Tablets — Indications and Usage. https://dailymed.nlm.nih.gov/dailymed/fda/fdaDrugXsl.cfm?setid=b56e04f0-490d-4f10-a0ed-31c288f4f4c5&type=display
18. U.S. Food and Drug Administration. Pharmacy Compounding Advisory Committee material discussing enclomiphene and male hypogonadism (2022). https://www.fda.gov/media/161294/download
19. U.S. Food and Drug Administration. FDA issues class-wide labeling changes for testosterone products (Feb. 28, 2025). https://www.fda.gov/drugs/drug-alerts-and-statements/fda-issues-class-wide-labeling-changes-testosterone-products
20. Centers for Disease Control and Prevention. Steroid Hormones Standardization Programs. https://www.cdc.gov/clinical-standardization-programs/php/hormones/index.html
21. British Society for Sexual Medicine. Guidelines on Male Adult Testosterone Deficiency (2023). https://pmc.ncbi.nlm.nih.gov/articles/PMC10307648/