Hormone Testing & Lab Panels: A Clinical Guide for Providers

Written by Empire Medical Training Editorial Team

Medically reviewed by Betsy Greenleaf, DO Board-Certified OB/GYN & Urogynecologist; Empire Director of Anti-Aging

Updated June 2026 ·11 min read

Hormone testing is the foundation of safe, effective hormone therapy. Before any pellet is placed or any prescription is written, the lab work tells a provider where a patient is starting, whether therapy is even appropriate, and what to watch as treatment unfolds. Yet testing in this field is more nuanced than ordering a single blood panel and reading the numbers. Hormones rise and fall through the day, convert into one another, and live partly in the bloodstream and partly inside tissue — so how you measure matters as much as what you measure.

This guide is written for clinicians who want a clear, honest overview of how hormone testing works within the broader practice of hormone replacement therapy. It draws on the clinical reasoning Empire's Director of Anti-Aging, Betsy Greenleaf, DO, teaches in the hormone pellet course. It is clinical education, not medical advice, and it deliberately avoids reference ranges and specific targets — those belong to current labs, current guidelines, and the paid course, not a general page.

Why test before any hormone therapy

The first principle is that you do not treat a symptom list — you treat a patient whose symptoms and labs agree. Many of the complaints that bring patients in (fatigue, low libido, mood changes, weight gain, poor sleep) overlap heavily across hormone imbalances and across conditions that have nothing to do with hormones at all. Baseline testing is what separates a hormone problem from a look-alike, and it establishes the reference point against which every later decision is judged.

Baseline labs do three jobs at once. They confirm the clinical impression, so therapy targets a real deficiency rather than a guess. They screen for safety, surfacing the contraindications that matter in this field — a history of hormone-sensitive cancer, clotting risk, abnormal thyroid antibodies, and so on. And they create a starting line: without a pretreatment value, there is no honest way to say later whether therapy is working or whether a level has drifted somewhere it should not be.

There is a second, less obvious reason. Hormones convert into one another. Cholesterol flows down a shared pathway into pregnenolone and progesterone, and from there into testosterone and the estrogens; testosterone is further metabolized into DHT and into estrogen. A baseline does not just tell you a level — it begins to reveal which way a given patient is metabolizing, which can completely change how therapy is approached. A man with high estradiol and a strong conversion pattern is a different clinical problem from a man with the same low testosterone and no conversion issue, even though their testosterone numbers look identical.

The core panels: what to order

There is no single universal panel — the right work-up follows the patient's sex, symptoms, and goals — but a comprehensive baseline generally spans four families of markers.

Sex hormones

The center of most evaluations is the sex-hormone panel: total and free testosterone, estradiol, and progesterone. Free testosterone matters because much of circulating testosterone is bound and biologically unavailable; the free fraction is closer to what tissue actually sees, which is why measuring total alone can mislead. Estradiol is the most potent of the estrogens and the one most relevant to supplementation and to conversion. Progesterone deserves attention even in men, because it sits upstream on the pathway and converts into other hormones — so its level needs to be followed when evaluating a candidate for therapy.

Thyroid

Thyroid status is woven through every hormone evaluation because the systems are coupled. A practical reading habit Dr. Greenleaf teaches is to look at TSH first: a high TSH is the body shouting for more thyroid, which sets the expectation that the thyroid output (free T4, and especially free T3) will run low. Thyroid antibodies such as TPO are worth including, because a low-thyroid pattern with high antibodies can point toward autoimmune thyroiditis and a different management path — sometimes an endocrinology referral rather than a hormone adjustment. Importantly, high cortisol, low testosterone, and high estrogen can all drag thyroid function down, so a deranged thyroid is not always a primary thyroid problem.

DHEA-S

DHEA-S is the adrenal androgen precursor and a frequently informative marker, especially in postmenopausal women, in whom the majority of testosterone is made in the adrenal glands. DHEA tends to fall with age alongside testosterone. It is also a window into stress physiology, because under chronic stress the body diverts precursors away from DHEA and the sex hormones to manufacture cortisol — so a low DHEA in a stressed patient is often a clue, not the whole diagnosis.

Cortisol

Cortisol is best understood as a rhythm, not a single number. It should rise in the morning to wake the body and taper through the day. A lone morning serum cortisol gives you one point on that curve and can be genuinely misleading; checking cortisol at several points across the day reveals the pattern — a blunted morning rise, a flattened curve, or an inappropriate evening spike from late exercise or chronic stress. That pattern often explains why sex-hormone levels look the way they do.

Blood vs. saliva vs. dried-urine testing

One of the most consequential decisions in hormone testing is the specimen and method, because serum, saliva, and dried urine do not measure the same thing — and their numbers cannot be compared to one another. Here is the honest trade-off across the three.

The practical headline Dr. Greenleaf gives is that saliva is often described as the gold standard for most hormones — with the explicit exception of testosterone, where serum remains the standard. Saliva reflects free, tissue-level hormone, which is frequently what you care about clinically. Serum, by contrast, is a single snapshot, but it has real advantages: it is performed by virtually every major lab and is commonly covered by insurance.

Dried-urine testing (the kind reported in panels like the DUTCH-style mapping she walks through in the course) adds a dimension neither of the others provides: metabolism. A urine panel shows not just where a hormone sits but how the patient is processing it — for example, what fraction of estrogen is traveling down the 2-, 4-, or 16-hydroxy pathways, which carries real implications since the 4-hydroxy route is the genotoxic one associated with higher cancer risk. It also displays the full daily cortisol curve and DHEA in context.

A genuinely useful real-world strategy she teaches: draw a baseline serum and a dried-urine panel at the same visit. The dried urine drives the clinical decisions because of the metabolism picture; the serum is held in reserve, so that if a patient later decides they no longer want to pay out of pocket for specialty testing, there is still an insurance-friendly baseline to follow. The one rule that cannot be broken: if you order saliva, you cannot compare it to serum — different methods, different references, no cross-reading.

Interpreting results in context

This is where testing becomes a clinical skill rather than a clerical task. The governing philosophy Dr. Greenleaf repeats is that hormone levels are not absolute — they are followed in relation to a patient's symptoms, with trends over time directing care. A number in isolation answers very little.

That philosophy is sometimes labeled “optimization,” and it is worth being precise about what it should and should not mean. The defensible version is this: keep the patient within the normal laboratory range for their identity, and read that range against how the patient actually feels and functions. The indefensible version — pushing levels well past the normal range purely to chase a symptom — is exactly what she cautions against, because chronically over-driving a receptor blunts its sensitivity over time. With testosterone in particular, the discipline is to keep levels in range and resist the urge to add more dose simply because symptoms persist, since libido and energy are multifactorial and rarely a pure testosterone story.

Two ideas make interpretation honest. First, patients do not follow the textbook. Two people with identical labs can feel completely different, and each patient has their own “normal” that only emerges by watching them over a span of months. Second, the numbers explain each other. A flattened cortisol curve with a low DHEA and low sex hormones is not three separate problems — it is frequently one story, where chronic stress is stealing precursors to make cortisol and starving the sex-hormone pathways downstream. Reading the panel as a connected system, rather than a column of independent values, is the entire interpretive game.

Monitoring on therapy

Once therapy starts, testing shifts from diagnosis to stewardship. The aim is no longer to make a diagnosis but to confirm the patient is responding, to keep levels within an appropriate range, and to catch drift before it becomes a problem. The same principle holds: follow trends and symptoms, not a one-time value.

The cadence depends on the delivery method. Symptom check-ins happen sooner than lab rechecks — often within the first weeks to a couple of months — and can be done by telehealth or in person to gauge how a patient feels. Formal lab retesting is timed to the therapy: with long-acting pellets, retesting is generally considered within roughly three to six months of placement, with the practical nuance that drawing too soon can catch an artificial peak, so timing the draw thoughtfully (or bridging with a short-acting hormone) matters. Because patients metabolize at their own pace, the durable pattern often only becomes clear across roughly six to eighteen months of follow-up.

This page intentionally stops short of specific target levels, retest-to-the-week schedules, dose-conversion math, and the pellet-timing rules that prevent receptor desensitization. Those exact numbers and protocols are taught in Empire's hormone course — they require the full clinical context to use safely, and reducing them to a web page would be both unhelpful and irresponsible.

Training to test and interpret well

Ordering hormone labs is easy. Reading them well — and turning them into safe, individualized therapy — is the skill that takes training. The gap between a clinician who orders a panel and one who can look at a cortisol curve, a metabolism map, and a thyroid pattern and know what to do next is exactly the gap a good course is built to close.

Empire's curriculum teaches testing and interpretation as a connected system, then links it to the hands-on side of practice through dedicated hormone pellet training. If you are building toward offering bioidentical therapy, it pairs naturally with the broader overview of bioidentical hormone replacement and with focused guides on testosterone replacement therapy and thyroid hormone optimization.