The 5 Blood Tests Every Business Leader Needs — And That Most Doctors Never Order

You're eating clean, exercising, and managing your calendar like a CEO should. And yet — energy dips midday, focus isn't what it was, and your body isn't responding the way it used to. Most doctors will tell you your labs look "fine." But fine on a standard panel is not the same as optimized. For business leaders who operate at the intersection of high stress, high stakes, and high output, there's a specific set of five blood tests that reveal what standard labs systematically miss. Todd Vande Hei, founder of Stark Health, has run these panels on himself and guided thousands of clients through the results. The data is always illuminating — and sometimes life-changing.

Why Standard Panels Fail High Performers

Standard labs test total testosterone — if they test it at all — using reference ranges so broad that you can be clinically "normal" while experiencing every symptom of hormonal insufficiency. They don't test free testosterone, estradiol for men, progesterone, or DHEA-S. This is like checking whether your car has any oil at all and declaring it roadworthy. What you actually need to know is whether that oil is clean, at the right level, and circulating correctly. Hormonal imbalances are silent saboteurs — they don't announce themselves until they're causing real damage. Energy crashes become chronic. Muscle gives way to fat. Mood and cognitive function erode slowly enough that you call it stress instead of a measurable, addressable imbalance. Todd's client Jake — a successful entrepreneur — had normal total testosterone on his standard panel. His free testosterone was barely in range. His DHEA-S was so low his adrenal function was on the verge of collapse. That's the gap between "fine" and actually fine.

Test 1 and 2: Free and Total Testosterone — The Complete Picture

Total testosterone measures all circulating testosterone, including the portion bound to proteins and therefore biologically inactive. Low total T indicates your body isn't producing enough. But here's what trips people up: you can have normal total T and still experience every symptom of testosterone deficiency if your free testosterone — the small, unbound fraction your body can actually use — is low. Free T is the fuel your body runs on for muscle synthesis, libido, energy, recovery, and cognitive function. You need both numbers. Together they tell you whether you have a production problem, a binding problem, or both. Todd's team at Stark targets free testosterone in the 20–30 range — a level most standard labs won't even flag as concerning if it's sitting at 8.

Test 3 and 4: Estradiol and Progesterone — The Overlooked Hormones

Estradiol is a form of estrogen that matters for both men and women. For men, estradiol regulates bone density, mood, and cardiovascular health — but too much (common when testosterone is high and aromatizing excessively) causes water retention, weight gain, emotional instability, and gynecomastia. Too little causes joint pain, poor bone density, and irritability. A symphony of healthy hormones requires estradiol in range. Progesterone — often called the "calming hormone" — is equally important for both sexes. It balances the effects of estrogen and testosterone, regulates mood and sleep quality, and plays a critical role in nervous system recovery. Low progesterone shows up as anxiety, poor sleep, and irritability — symptoms business leaders routinely attribute to stress rather than measuring. Both tests reveal whether your hormonal ecosystem is in harmony or quietly dysregulated.

Test 5: DHEA-S — The Adrenal Marker That Predicts Your Stress Resilience

DHEA-S is the precursor hormone your body uses to manufacture both testosterone and estrogen. It's also a direct marker of adrenal function — specifically, how well your adrenal glands are coping with chronic stress. When DHEA-S is low, your adrenal glands are being outpaced by the demands you're placing on them. The downstream cascade: chronic fatigue, poor immune function, burnout, hormonal decline across the board. This is why DHEA-S is the test that most surprises Todd's new clients. Someone can have "acceptable" testosterone levels and still be running on depleted adrenals — functionally exhausted in ways that no amount of coffee or willpower will fix. Optimal DHEA-S is associated with higher energy, better stress resilience, improved vitality, and even skin health. It's the most overlooked test on this list, and arguably the most revealing for the high-performing business leader running a chronically stressed nervous system.

Key Takeaways

• Standard panels test total testosterone at best — and use ranges so broad they miss most functional insufficiency.
• You need both free and total testosterone: one reveals production, the other reveals bioavailability.
• Estradiol matters for men too — imbalanced estradiol directly undermines testosterone function and physical health.
• Low progesterone explains anxiety, poor sleep, and poor recovery — symptoms typically blamed on "stress."
• DHEA-S is your adrenal resilience marker — low levels mean your stress load has outpaced your biological capacity to handle it.