Proactive hormone testing – get ahead of your health

What Are Hormones and Why Are They Important?

Hormones are chemical messengers produced by endocrine glands and released into the bloodstream. They direct essential biological processes by signaling organs when and how to act.

Whether it’s metabolism, immune response, appetite, growth, mood, stress response, or reproduction—hormones keep everything running in balance.

And the good news? Nearly every hormone can be tested by a physician.

Which Hormones Can Be Tested?

Technically, vitamin D functions as a hormone since the body can produce it on its own, but labs typically categorize it under vitamins. Below is an overview of hormones commonly tested in women and men. (Note: most hormones play at least some role in both sexes.)

Hormone	Women	Men	Function
Cortisol			Stress, energy
DHEA-S			Vitality, aging
FSH			Ovarian function, fertility
LH			Ovarian function, fertility
Estradiol			Mood, sexual function, bone & heart health
Progesterone			Cycle, fertility, mood
Prolactin			Cycle, fertility, mood
Free testosterone			Vitality, mood, libido, muscle mass
Total testosterone			Vitality, mood, libido, muscle mass
TSH			Metabolism, thyroid function

Why It Pays to Be Proactive About Hormone Testing

Detect Issues Early

Even a slightly elevated TSH level (thyroid-stimulating hormone) may signal an early-stage thyroid underfunction.

Optimize Health and Vitality

Knowing your hormone levels can benefit you even if you’re otherwise healthy. If you often feel fatigued or off-balance, the reason might be a small, treatable deficiency—like low thyroid function, vitamin D, or testosterone. Lifestyle changes, supplements, or medication can significantly improve how you feel.

Prevent Disease

Many chronic conditions are linked to hormone imbalances. For instance, persistently elevated cortisol (often due to stress) increases the risk of high blood pressure, sleep disorders, and weight gain. Early detection allows for timely intervention.

Data Instead of Guesswork

Without concrete numbers, it's easy to misjudge symptoms. Fatigue, for example, could stem from stress, anemia, or thyroid issues. A hormone test brings clarity. If your values are within range, you know hormones aren’t the root cause.

Track Trends and Act Early

Hormone levels naturally shift over time—testosterone in men, for example, drops by about 1% each year after age 30. Women experience significant hormonal changes during menopause.

Regular testing (annually or biannually) helps track individual trends early. Is your cortisol rising due to stress? Is your thyroid function declining? Routine checks help you respond in time and track the effects of any interventions.

How Do Hormonal Changes Affect Your Daily Life?

Hormones often work behind the scenes—but their fluctuations can be felt. Maybe you’ve noticed: some days you're full of energy, others you're inexplicably drained. Your mood may swing without warning. Hormonal changes are often the underlying cause.

Hormone Testing: What Types Are There and How Do They Work?

So how do you know if your hormone levels are balanced? Medical professionals typically use blood tests for hormone analysis.

A sample is drawn from a vein and sent to a lab for measurement. Each hormone has a reference range—values considered normal for healthy individuals. If your level is significantly above or below that range, it may indicate a hormonal imbalance.

Special Considerations for Women

In women, hormone levels fluctuate throughout the menstrual cycle. For fertility assessments or cycle irregularities, baseline hormone tests are typically done between days 3 and 5 of the cycle, when estrogen and progesterone are at their lowest.

Prolactin, on the other hand, is ideally measured between cycle days 21 and 23, a few hours after waking up.

How Are Hormones Measured in the Lab?

Labs often use immunoassay techniques such as ELISA, ECLIA, or RIA tests. Many hormones circulate in extremely small concentrations (picogram range) and are often bound to transport proteins.

For example, most testosterone in the bloodstream is protein-bound, with only a small portion freely available. Since free levels are harder to measure directly, labs typically assess total hormone levels (bound + free).

One lab value alone is rarely sufficient for diagnosis. Elevated transport proteins, for example, can make hormone levels appear deceptively low. And even if a hormone is outside the normal range, that doesn’t automatically mean there’s a functional disorder.

That’s why medical professionals always interpret lab values in context.

Alternative Methods: Saliva and Urine Tests

Besides blood, hormones can also be measured in saliva or urine.

Saliva tests typically measure the free (biologically active) portion of a hormone. A practical example is the salivary cortisol profile, where multiple saliva samples are collected throughout the day to assess cortisol rhythms. This helps detect issues like elevated evening cortisol in stress-related disorders.

Urine tests are often used to measure total hormone excretion over 24 hours. A classic example is the 24-hour urine cortisol test, used to diagnose Cushing’s syndrome (cortisol overproduction). In such cases, the patient collects all urine for a full day, and the lab determines total cortisol output.

Hormone metabolites can also be detected in urine, offering additional insights. These alternative tests are mainly used in specialized settings, research, or preventive medicine. For standard diagnostics, blood tests remain the primary method.