The testosterone panel

The testosterone panel is the set of morning blood tests a licensed provider uses, together with your symptoms, to decide whether you have testosterone deficiency. Your coordinator arranges it at a lab near you, and your provider reviews the results with you before any treatment is discussed.

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Prescription treatment requires an evaluation by a licensed healthcare provider, who decides whether treatment is appropriate for you. Not everyone qualifies. Completing an assessment, booking a visit, or paying a fee does not guarantee a prescription.

A gloved hand places an empty blood tube with a lavender cap into a white rack on a clinic counter

Key facts

The diagnosis needs symptoms plus consistently low morning results, so the panel is built around repeat morning testing.

When: early morning, fasting²
How many: at least two tests on separate days to confirm a low result^1,3
Common threshold: near 300 ng/dL, read together with your symptoms²
Where: a lab patient service center near you, usually as a walk-in; some offices can also draw your blood
Who reviews it: a licensed provider, with you, at your visit

What guidelines call for

The Endocrine Society guideline sets out the tests behind a diagnosis and the checks before treatment. Your provider decides which apply to you.¹

A fasting morning total testosterone, on an accurate and reliable assay
A repeat morning test to confirm a low result
Free (unbound) testosterone when total testosterone is near the lower limit or when a condition affects the binding protein, SHBG
Further tests to find the cause once deficiency is confirmed
Before treatment, a red blood cell count (hematocrit) and a prostate risk check including PSA, since a high hematocrit or a raised PSA without urology evaluation are reasons not to start

The Endocrine Society says there isn't enough evidence to support routine testosterone screening in men without symptoms.²

How to prepare

Book an early-morning draw and follow your coordinator's fasting instructions. Bring a photo ID and a list of the medicines you take.

Tell your coordinator if you take testosterone or other hormones already, or if you've had testosterone tests elsewhere. Your provider decides whether earlier results can be used.

Reading the results

Your provider reads the numbers alongside your symptoms and history. A single result, or symptoms on their own, don't make a diagnosis.²

Assays vary between labs: the same sample can read low at one lab and normal at another, which is why the Endocrine Society recommends standardized assays.² Your provider also looks for causes that can be reversed, such as excess weight or medicines like opioids or corticosteroids, before treatment is discussed.²

If your results and symptoms point to deficiency, your provider explains the options, including testosterone replacement therapy and its risks.

Testosterone is FDA-approved for men with low testosterone caused by certain medical conditions. Its safety and effectiveness for low testosterone due to aging alone have not been established. Testosterone can raise blood pressure and red blood cell count, reduce sperm production and fertility, and requires monitoring of the prostate and blood levels. Your provider will review the benefits and risks and monitor you with regular labs. Important Safety Information for testosterone

After the first panel

If you start treatment, follow-up labs repeat some of these tests on a schedule your provider sets. Follow-up labs on TRT

Cost

The lab panel is the first step you pay for, and your coordinator explains its cost before you pay. You get a receipt by email, and paying for labs doesn't commit you to anything else. How pricing works

Where to start

Start with a call or the short online check, and your coordinator arranges your panel. How it works

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Questions

Why does the test have to be in the morning?

Guidelines and the testosterone label both call for morning measurements, and the Endocrine Society specifies early-morning, fasting tests. Your coordinator gives you the timing for your draw.^1,2,3

Why do I need two tests?

One low result is not enough to diagnose low testosterone. Guidelines call for repeating the morning test to confirm it, and the label asks for low results on at least two separate days before treatment.^1,3

What does free testosterone mean?

Most testosterone in the blood is bound to proteins, and a small share is unbound. Guidelines suggest measuring the unbound share when total testosterone is near the lower limit or when a condition changes the binding protein (SHBG).^1,3

My last doctor said my levels were normal. Can I still be tested?

Yes. Your provider looks at your symptoms and your past results, including the time of day and how many tests were done, and decides whether new labs are needed. Results can also differ between labs.²

If my testosterone is low, will I be prescribed something?

Not automatically. Your provider looks for reversible causes first, such as excess weight or medicines like opioids or corticosteroids, checks for reasons not to start, and decides with you whether treatment is appropriate.²

How long until I get results?

Your coordinator tells you when to expect them and books your visit to review them with your provider.

Sources

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 (abstract) pubmed.ncbi.nlm.nih.gov/29562364/
Endocrine Society. Statement on Testosterone Replacement Therapy. July 16, 2026 www.endocrine.org/news-and-advocacy/news-room/2026/statement-on-testosterone-replacement-therapy
DailyMed. Testosterone cypionate, prescribing information: dosage and administration (diagnosis confirmation), clinical pharmacology (binding), laboratory tests (Pharmacia & Upjohn; label effective 2026-08-21) dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=cfbb53d4-b868-4a28-8436-f9112eb01c39