If you have had a health check in the last few years, you probably came away knowing your cholesterol, blood pressure, and perhaps your blood sugar. Useful information. But if your GP did not mention testosterone, free testosterone, SHBG, LH, or FSH, you have effectively had your car's oil and tyres checked while the engine specification went untouched.
This is not a criticism of GPs — it is a reflection of what standard preventive health panels are designed to do. They screen for common chronic disease markers. A full male hormone panel is not part of that protocol unless there is an obvious presenting complaint. Which means millions of men have had "normal" bloodwork without ever having the markers most relevant to energy, body composition, mood, and sexual function actually measured.
What a Comprehensive Male Hormone Panel Actually Covers
A full panel goes considerably further than a single testosterone number. Here is what it includes and why each marker matters:
Total Testosterone is the starting point — the total amount of testosterone circulating in the blood, typically measured in nanograms per decilitre (ng/dL). Standard laboratory reference ranges sit between 300 and 1,000 ng/dL for adult men. But total testosterone alone is an incomplete picture, because much of it is bound to proteins and biologically inactive.
Free Testosterone is the fraction not bound to proteins — typically around 2–3% of total testosterone — and represents what is actually available for use by cells and tissues. This is arguably the more clinically meaningful number. A man with a total testosterone of 500 ng/dL but high protein binding may have functionally low available testosterone, while a man at 350 ng/dL with low binding may have adequate free levels. The two numbers need to be read together.
SHBG (Sex Hormone-Binding Globulin) is the protein most responsible for binding testosterone and making it unavailable. Normal adult male ranges sit between 10 and 50 nmol/L. High SHBG — common with ageing, and elevated by factors like high alcohol intake and thyroid disorders — effectively reduces the amount of bioavailable testosterone even when total levels appear normal. This is the mechanism behind many cases of "normal" total testosterone coexisting with classic low-T symptoms.
LH (Luteinising Hormone) and FSH (Follicle-Stimulating Hormone) are the pituitary hormones that signal the testes to produce testosterone and sperm respectively. Reference ranges for adult males are 2–9 IU/L for LH and 2–12 IU/L for FSH. These markers distinguish between primary hypogonadism (a testicular problem — LH elevated as the pituitary pushes harder) and secondary hypogonadism (a signalling problem — LH low or normal despite low testosterone). This distinction matters enormously for treatment approach.
Estradiol (E2) is the primary oestrogen in men, and it is present — and important — in male physiology. Normal male ranges sit between 10 and 40 pg/mL. Testosterone converts to estradiol via the aromatase enzyme; too little estradiol causes bone density loss and libido issues, while too much can cause mood disruption, water retention, and can suppress testosterone production through negative feedback. Understanding estradiol is particularly relevant for men on TRT or supplementing heavily with aromatase-inhibiting compounds.
Thyroid markers (TSH, free T3, free T4) are often included in a comprehensive men's panel because thyroid dysfunction produces a symptom profile — fatigue, brain fog, weight changes, mood disturbance — that overlaps substantially with low testosterone. Treating one when the other is the actual issue produces poor results.
What Most Men Do Instead
Most men wait for symptoms to become severe enough to bring to a GP, at which point the GP may order a single total testosterone test, find it within range, and conclude there is no hormonal issue. This approach misses the SHBG picture, misses free testosterone, misses the pituitary-level context provided by LH and FSH, and misses estradiol entirely. It is not wrong, exactly — it is just incomplete for anyone wanting a full understanding of their hormonal status.
A growing number of men are bypassing this gap through private at-home testing — mail-in finger-prick or venous draw kits from companies like Medichecks, Forth, or Thriva in the UK, and services like Marek Health, Ulta Lab Tests, and LabCorp Direct in the US. These panels typically cost between £80–£200 or $150–$300 and return results within a few days with a reference range breakdown.
What to Do With the Numbers
Results should be reviewed in clinical context, not interpreted in isolation from a webpage. Numbers near the bottom of reference ranges require a different conversation than numbers deep within range. Symptoms matter as much as statistics. The most useful step after testing is a conversation with a provider who specialises in men's hormonal health — someone who will look at the full picture and discuss what the results mean relative to how you actually feel, rather than simply confirming whether a single number falls inside a wide population range.
That combination — real data plus clinical interpretation — is what turns bloodwork from a box-ticking exercise into genuinely actionable information.
Getting Started
If you have never had a comprehensive hormone panel, the barrier is lower than most men assume. At-home testing has made it straightforward, and the information it returns is among the most practically useful health data you can hold about yourself. Our newsletter goes deeper on interpreting results, what to ask a provider, and what the research says about acting on what you find — sign up below if that is useful.
