The male hormone blood panel: what to test after 50

Why you need a morning draw

Before the nine markers: timing matters. Testosterone follows a diurnal rhythm - levels peak between 7 and 9 AM and fall by 25 to 50 percent by afternoon. The reference ranges on your lab report were built using morning draws. A 2 PM draw that returns a borderline-low result may look identical to clinical hypogonadism in a man whose morning levels are entirely normal. The rule: total testosterone drawn before 10 AM, ideally 7-9 AM, ideally fasted. If your result is borderline and the draw was afternoon, repeat it in the morning before reading anything into it.

The nine markers: what each one shows

For each marker below, ranges are presented as a labeled pair: the standard lab reference range (population-based, what most clinical labs use) and the longevity-optimal target (what functional-medicine and longevity clinicians aim for in otherwise healthy aging men). The optimal targets are more aggressive than population reference ranges and are not universal medical consensus. They represent the upper range of published functional-medicine guidance. Discuss your results with a clinician before drawing conclusions or starting any intervention.

1. Total testosterone

What it shows: The total amount of testosterone in your blood - both the fraction bound to proteins (SHBG and albumin) and the small free fraction. This is the number most primary care doctors order and the one most commonly reported as "your testosterone." It is a useful starting point but a poor endpoint for a 50-year-old man.

Why it is not the whole story: Most total testosterone is biologically inactive because it is tightly bound to SHBG. A man with high SHBG can have a "normal" total T number and still be functionally testosterone-deficient at the cellular level. Total T must always be read alongside free T and SHBG.

2. Free testosterone

What it shows: The small fraction of testosterone not bound to SHBG or albumin - the only fraction your cells can immediately use. Roughly 1 to 3 percent of total testosterone is free. This is the number that tracks most closely with the symptoms men describe: energy, libido, recovery, mood, and body composition.

Assay note: Free testosterone can be measured directly (by equilibrium dialysis, the gold standard) or calculated from total T and SHBG using published equations. The calculated value is adequate for clinical decision-making but less precise than dialysis. If your result looks borderline, ask whether the method was dialysis or calculated.

3. SHBG (sex hormone binding globulin)

What it shows: A liver protein that binds testosterone (and estradiol) tightly, making those hormones unavailable to tissue. SHBG rises with age - the average man in his 50s has meaningfully higher SHBG than he did at 25 - which is one reason free testosterone drops faster than total testosterone as men age. High SHBG is a common and underappreciated reason for low-T symptoms in a man whose total testosterone tests "normal."

What drives SHBG up: Age, elevated thyroid hormone, low insulin (ketogenic or very low-calorie diets), alcohol, and some medications (especially statins and anticonvulsants). Addressing the driver can lower SHBG without any hormone intervention. See the full SHBG test explainer for a deeper breakdown.

4. Estradiol (E2) - sensitive assay

What it shows: Estradiol is the primary form of estrogen in men, produced by the aromatization of testosterone (primarily in adipose tissue and the liver). Men need some estradiol - it is critical for bone density, cardiovascular health, libido, and mood. The goal is not to drive estradiol low; it is to keep it in a productive range. Too low (common in men on TRT who over-suppress aromatization) causes joint pain, low libido, and mood problems. Too high (common in men with high body fat or after unmanaged DHEA supplementation) causes water retention, mood changes, and can reduce libido.

Assay matters: Standard estradiol panels are calibrated for women. Use the sensitive assay (LC/MS-MS method, Roche ECLIA, or "ultrasensitive E2") for accurate results in the male range. If the lab report just says "Estradiol" without qualifying the assay, ask. A standard assay returning a low male result may simply be inaccurate rather than reflecting true estradiol level.

5. LH (luteinizing hormone)

What it shows: LH is a signal hormone produced by the pituitary gland that tells the testes to make testosterone. Testing LH tells you whether low testosterone (if present) is primary or secondary - a distinction that changes what you do about it. High LH with low testosterone means the testes are not responding to the signal (primary hypogonadism - a testicular problem). Low or normal LH with low testosterone means the pituitary is not sending the signal (secondary hypogonadism - a brain/pituitary problem). The two have different treatment paths.

Clinical relevance: Secondary hypogonadism (low LH + low T) can sometimes be addressed with SERM therapy or clomiphene, which stimulates the pituitary rather than bypassing it. This preserves natural testosterone production and testicular function - a relevant consideration for men who want to maintain fertility. Primary hypogonadism typically points toward TRT. LH is the fork in the road.

6. FSH (follicle-stimulating hormone)

What it shows: FSH is the companion pituitary signal to LH. Where LH tells the testes to produce testosterone, FSH tells the testes to produce sperm. In a man over 50 who is not concerned with fertility, FSH is primarily useful as a second data point on pituitary function. Elevated FSH in an older man can indicate primary testicular failure (the testes are not working and the pituitary is compensating by sending more signal). FSH also rises significantly in men on TRT, since the pituitary's FSH output is suppressed by exogenous testosterone - this is why men on TRT who want to preserve fertility require additional drugs (like HCG) to maintain testicular function.

7. DHEA-S (dehydroepiandrosterone sulfate)

What it shows: DHEA-S is the stable, storage form of DHEA - a hormone produced by the adrenal glands that serves as a precursor to both testosterone and estrogen. It declines dramatically with age: the average man in his 50s has roughly 50 to 70 percent less DHEA-S than he did in his 20s. Low DHEA-S is associated with fatigue, reduced wellbeing, and modest reductions in downstream sex hormones. Unlike testosterone, DHEA is available over the counter in the US, and supplementation in men with confirmed low levels is a reasonable conservative first step before considering TRT. See the full DHEA-S test explainer and the DHEA and pregnenolone protocol page.

8. Prolactin

What it shows: Prolactin is a pituitary hormone primarily known for its role in lactation, but it has important function in men. Elevated prolactin in a man is a red flag: high prolactin suppresses LH and FSH, which in turn suppresses testosterone production. This is a concrete, correctable cause of secondary hypogonadism that will not resolve with TRT - it requires finding and addressing the prolactin driver. The most common causes of elevated prolactin in men are a pituitary microadenoma (prolactinoma, a usually benign growth), certain medications (antipsychotics, metoclopramide, some antidepressants), hypothyroidism, and chronic kidney disease. A man with low testosterone should always get prolactin checked before starting TRT - missing an elevated prolactin means treating a symptom while the actual cause continues unchecked.

9. Progesterone

What it shows: Progesterone is typically thought of as a female hormone, but men produce small amounts - primarily in the adrenal glands and testes - where it serves as a precursor to testosterone and cortisol. In men, progesterone also modulates estrogen receptor activity and may play a role in mood and sleep quality, though the evidence in men is limited. Low progesterone in men is occasionally associated with sleep disruption and anxiety, and is sometimes flagged by longevity clinicians alongside DHEA-S as part of an adrenal-aging picture. It is not a common standalone concern but is worth including in a comprehensive baseline panel because it is cheap to add and establishes where you start.

The context problem: why numbers alone are not enough

A lab report is not a diagnosis. The number on the page is one data point inside a much larger picture. Three things affect how to interpret any hormone value:

• Symptoms. A man at free testosterone of 80 pg/mL with no symptoms lives differently from a man at 80 pg/mL who is exhausted, has no libido, and cannot recover from training. The number is the same; the clinical situation is different. Symptoms matter and should not be waved away in favor of a "normal" reference range result.
• The full panel in context. Total T means nothing without free T. Free T means nothing without SHBG. Estradiol means nothing without total T as context. LH and FSH tell you whether a problem is primary (testicular) or secondary (pituitary). No single marker stands alone.
• Trend over time. A single snapshot tells you where you are. Two or three draws over 12-18 months tell you the direction of travel. Testosterone typically falls 1-2% per year after 30. If you are falling faster than that, that is information. If you have been stable for three years, that is also information.

This is why ordering labs through a service with medical oversight is worth the cost. The interpretation requires context - not just the ability to read a reference range but the ability to look at nine numbers simultaneously and ask whether the picture makes sense. That is the value of working with a longevity clinician versus ordering a panel cold and Googling the results.

What to add to the panel: the supporting markers

The nine-marker hormone panel above is the core. A complete longevity-oriented baseline for a man over 50 also includes:

• PSA (prostate-specific antigen) - Required context before touching any androgenic hormone. Men with elevated PSA awaiting workup should not start TRT, DHEA, or any hormone protocol until prostate health is clarified.
• Thyroid panel (TSH, free T3, free T4) - Thyroid dysfunction is common in men over 50 and can suppress testosterone and raise SHBG. Hypothyroidism mimics many symptoms of low testosterone and should be ruled out before attributing symptoms to hormone deficiency.
• Complete metabolic panel - Liver health (relevant to SHBG production and any hormone metabolism), kidney function (relevant to erythropoietin signaling and some drug metabolism), glucose and A1C (insulin resistance correlates with low testosterone).
• CBC (complete blood count) - Baseline before starting TRT specifically, since testosterone increases hematocrit (red blood cell production). Required monitoring on any testosterone protocol.
• IGF-1 - If growth hormone axis interest is part of the picture. IGF-1 is the downstream marker for growth hormone secretion and is the relevant number for men considering sermorelin or other GH-axis peptides. See the GH protocol page.

Reading your results: where each low-number leads

The panel is not an end in itself. Every result points somewhere specific. The Protocol One pages are mapped to the findings most commonly worth investigating:

Getting the panel done with medical oversight

You can order a standalone hormone panel cold through several direct-to-consumer lab services - Quest, LabCorp, and Ulta Lab Tests allow individual test ordering without a doctor's order in most US states. The panel is relatively cheap this way (roughly $150 to $300 for all nine markers depending on the service). The limitation is interpretation: you get the numbers without anyone explaining what they mean in combination.

The cleaner path for a man who wants this panel interpreted in the context of a longevity protocol - and who may want to act on the results with a prescription if the numbers warrant it - is a telehealth service that bundles labs with clinical review. We have evaluated Ageless for this specifically. They can run the full hormone panel, interpret DHEA-S and free testosterone in context, and if the results point toward TRT or GH-axis support, they are already the provider who can manage the prescription. You are not starting over with a new doctor if the conversation moves that direction.

We do not currently earn a commission on direct-to-consumer lab services (Quest, LabCorp, Ulta Lab Tests, Function Health, Marek Health) and we have no affiliate relationship with any of them. We are listing them as honest options because they exist and may be the right starting point for some men. If you choose supervised testing through Ageless, we may earn a commission at no cost to you.

Frequently asked questions

What hormones should a man over 50 test?

The nine-marker panel that actually tells the story: total testosterone, free testosterone, SHBG (sex hormone binding globulin), estradiol (sensitive assay), LH (luteinizing hormone), FSH (follicle-stimulating hormone), DHEA-S, prolactin, and progesterone. Total testosterone alone is meaningless without free testosterone and SHBG context - a man can have a "normal" total T but barely any bioavailable testosterone because SHBG is binding most of it. Estradiol rounds out the picture by showing how much testosterone is aromatizing to estrogen. Add PSA if you are 40 or older and a basic metabolic panel for liver and kidney baseline.

Why is total testosterone not enough?

Most testosterone in your blood is bound to proteins - primarily SHBG and albumin - and unavailable to your cells. Only free testosterone (roughly 1-3% of total) can enter tissue and produce the effects you care about. A man with total testosterone of 550 ng/dL but very high SHBG may have less active testosterone than a man with total T of 400 ng/dL and low SHBG. The symptoms of low testosterone - low energy, poor recovery, reduced libido - correlate far better with free testosterone than with total. Free testosterone plus SHBG plus estradiol is the minimum picture worth reading.

What is a normal free testosterone level for a man over 50?

Standard lab reference ranges for free testosterone in men over 50 typically run from roughly 35-155 pg/mL when measured by equilibrium dialysis (the gold-standard method). These population-based ranges are built from average men, not optimized ones. Longevity-oriented functional medicine practitioners tend to target the upper half - roughly 100 pg/mL or above - though this is a functional goal and not universal medical consensus. Symptoms matter as much as the number: a man at 80 pg/mL with no symptoms is a different clinical picture from a man at 80 pg/mL with fatigue, low libido, and poor recovery. Discuss your result with a clinician who understands this context.

What does high SHBG mean for a man?

SHBG (sex hormone binding globulin) is a liver protein that binds testosterone tightly, making it unavailable to your cells. High SHBG is common in men over 50 and means less free testosterone even when total testosterone looks normal. SHBG rises with age, with elevated thyroid hormone, with low calorie intake, and with some medications. Causes worth investigating first: thyroid function, liver health, and dietary patterns. Elevated SHBG does not mean TRT is automatically the answer - addressing the underlying driver can lower SHBG and improve free testosterone without any hormone intervention.

Should I test estradiol as a man?

Yes, and specifically with a sensitive assay. Standard estradiol tests are calibrated for women and are not accurate at the low levels typical in men. Use the sensitive (ultrasensitive) estradiol assay - LC/MS-MS or Roche ECLIA - for accurate male-range results. Why it matters: testosterone aromatizes to estradiol, and estradiol in men plays important roles in bone density, cardiovascular health, libido, and mood. Too low causes joint pain, low libido, and mood problems. Too high causes water retention, mood changes, and can reduce libido. Standard reference range for men is roughly 10-40 pg/mL; longevity-oriented clinicians typically aim for 20-35 pg/mL.

Should I get a morning draw for testosterone?

Yes. Testosterone follows a diurnal rhythm - levels peak between 7 and 9 AM and can fall 25-50% by afternoon. The reference ranges on your lab report were built from morning draws. A 2 PM draw that returns a borderline-low result may look identical to clinical hypogonadism in a man whose morning levels are entirely normal. Draw before 10 AM, ideally between 7-9 AM. If your draw was afternoon and the result is borderline, repeat it in the morning before drawing any conclusions.

How we make money on this page

If you choose medical supervision through Ageless via the link above, we may earn a commission at no cost to you. We earn nothing from direct-to-consumer lab services (Quest, LabCorp, Ulta Lab Tests, Function Health, Marek Health). Full disclosure.

Where to go next

• TRT for men over 50 - if low free T with symptoms is the finding, this is the complete guide to testosterone replacement
• DHEA and pregnenolone for men over 50 - the conservative first step if low DHEA-S is the finding; OTC, reversible, lower-risk than TRT
• HGH and growth hormone peptides for men over 50 - if the GH axis is the interest, starts with IGF-1 testing
• SHBG test explainer - what high SHBG means and what to do about it before going to TRT
• DHEA-S test explainer - interpreting your DHEA-S result and the supplementation decision tree
• Best longevity Rx telehealth - if you want labs interpreted with medical supervision, this is the provider matrix
• The Peptide Cheat Sheet, audited - 60 compounds ranked by evidence tier; where hormone support fits in the broader longevity stack
• Protocol One FAQ - the most common questions about hormones, peptides, and how to read your labs