The Optimal Male Bloodwork Panel

Most doctors will tell you your bloodwork is "normal" if your results fall within the lab reference range. The problem? Those reference ranges are based on the average population — which includes sedentary, overweight, metabolically unhealthy individuals. "Normal" and "optimal" are not the same thing.

This guide covers the exact markers every man should test, the optimal ranges backed by research, how often to test, and where to order panels without a doctor's referral. If you're serious about optimizing your biology, this is your starting point.

The Core Panel: Non-Negotiable Markers

Every man over 30 should test these markers at least annually. If you're on TRT, peptides, or any performance protocol, test every 3-6 months.

Hormonal Panel Deep Dive

Total Testosterone

The headline number that most men fixate on — and it matters, but not in isolation. Total testosterone measures all testosterone in your blood, including the portion bound to SHBG (unavailable to tissues) and the portion bound to albumin (weakly bound). The truly important number is free testosterone.

Optimal range: 600-900 ng/dL. The lab "normal" lower limit of 264 ng/dL is derived from a population that includes obese, sedentary, and chronically ill men. A 35-year-old man at 300 ng/dL is technically "normal" but almost certainly experiencing symptoms of low testosterone.

Testing note: Always test in the morning before 10 AM, fasted. Testosterone peaks in the early morning and declines 20-30% by afternoon. Testing after a poor night's sleep, after heavy alcohol use, or while acutely ill will give artificially low readings.

Free Testosterone

This is the testosterone that's actually available to your tissues — the portion not bound to SHBG. About 2-3% of total testosterone is free. If your total T is 700 ng/dL but your SHBG is sky-high at 60 nmol/L, your free T could be suboptimal despite a "normal" total.

Optimal range: 15-25 ng/dL (direct measurement). Calculated free T is less reliable than direct measurement — request the direct assay if available.

SHBG (Sex Hormone Binding Globulin)

SHBG is the protein that binds to testosterone and renders it unavailable. Think of SHBG as the gatekeeper — too much SHBG means less free testosterone reaches your tissues, even if total T is adequate.

Optimal range: 20-40 nmol/L. Common causes of elevated SHBG include hyperthyroidism, liver disease, aging, and low-carb diets. Low SHBG is associated with insulin resistance, obesity, and type 2 diabetes. The relationship between SHBG and metabolic health is bidirectional — fixing metabolic issues often normalizes SHBG.

Estradiol (E2) — Sensitive Assay

Men need estrogen. This is counterintuitive but critical. Estradiol — the primary estrogen in men — is essential for bone health, brain function, libido, and cardiovascular protection. The key is balance: too high causes gynecomastia, water retention, and mood issues. Too low causes joint pain, low libido, brain fog, and bone loss.

Optimal range: 20-30 pg/mL. Always request the sensitive estradiol assay (LC/MS method), not the standard immunoassay. The standard assay is designed for female ranges and is unreliable at the lower levels found in men.

Thyroid Markers: The Overlooked Panel

Thyroid function is drastically undertested in men. Most doctors only test TSH — and only if you specifically complain about fatigue or weight gain. The problem is that subclinical thyroid dysfunction can mimic low testosterone symptoms almost exactly: fatigue, brain fog, weight gain, depression, low libido.

At minimum, test: TSH, Free T3, Free T4. If you can afford more: add thyroid antibodies (TPO-Ab and TG-Ab) to screen for Hashimoto's thyroiditis, which is more common in men than most people realize.

Metabolic and Inflammatory Markers

These markers tell you about your metabolic health — insulin sensitivity, cardiovascular risk, and systemic inflammation. They're the early warning system for problems that won't show symptoms for years.

• Fasting Glucose + HbA1c: The tandem for metabolic health. Fasting glucose is a snapshot; HbA1c is the 3-month average. You want both.
• Fasting Insulin: Often overlooked. You can have normal glucose but elevated insulin (hyperinsulinemia) — an early sign of insulin resistance that precedes diabetes by years. Optimal: 3-8 μIU/mL.
• hsCRP (high-sensitivity C-reactive protein): The best single marker for systemic inflammation. Below 1.0 is optimal. Above 3.0 warrants investigation. Chronic low-grade inflammation is a driver of virtually every chronic disease.
• Lipid Panel (advanced): Standard cholesterol numbers are incomplete. Request an NMR lipid profile if possible — it gives you LDL particle count and size, which are better predictors of cardiovascular risk than LDL-C alone.

How Often to Test

• Baseline: Get a comprehensive panel before starting any protocol. This is your reference point. Without a baseline, you can't measure progress.
• On TRT or peptides: Every 3 months for the first year, then every 6 months once stable.
• Natural optimization: Every 6-12 months depending on what you're tracking.
• After a major protocol change: 6-8 weeks to see the full effect, then retest.

Where to Order Panels

You don't need a doctor's referral to order your own bloodwork. Direct-to-consumer lab testing services allow you to order panels online and walk into a Quest or LabCorp near you. Results are delivered digitally, usually within 2-5 business days.

• Marek Health: The most comprehensive hormone panels available. Built by the hormone optimization community. Our top recommendation for TRT-adjacent bloodwork.
• Ulta Lab Tests: Wide range of panels at competitive prices. Good for basic metabolic and thyroid testing.
• Walk-In Lab: Similar to Ulta Lab Tests with frequent promotions.