Personalized bioidentical hormone therapy for men and women — explore our services
Hormone therapy without lab work is guesswork. Symptoms like fatigue, weight gain, brain fog, and low libido can be caused by any number of hormonal imbalances — or by non-hormonal conditions entirely. Comprehensive lab testing is the only way to identify exactly what’s happening in your body, quantify the deficiency, and design a protocol that addresses your specific biology.
At BHRT Boost, every patient starts with a comprehensive lab review before any treatment decisions are made. Here’s what that panel includes and why each marker matters.
What it measures: The total amount of testosterone in your blood, including both bound (to SHBG and albumin) and unbound (free) testosterone.
Why it matters: Total testosterone gives a broad view of testosterone production. It’s the most commonly ordered testosterone test, but on its own, it can be misleading — a man with high SHBG might have “normal” total testosterone but very low free testosterone, meaning less biologically active hormone is available.
Relevant for: Men with suspected low testosterone and women with fatigue, low libido, or muscle loss.
What it measures: The fraction of testosterone that is unbound and immediately available to interact with receptors and exert biological effects.
Why it matters: Free testosterone is often the more clinically relevant number. Two men with identical total testosterone levels can have very different free testosterone levels depending on their SHBG. Symptoms correlate more closely with free testosterone than total.
Relevant for: Both men and women; essential for interpreting total testosterone in context.
What it measures: The most potent and biologically active form of estrogen.
Why it matters for women: Estradiol is the primary estrogen driving menopausal symptoms. Low estradiol causes hot flashes, vaginal dryness, bone loss, cardiovascular changes, and cognitive symptoms. It’s the central marker for evaluating perimenopause and menopause.
Why it matters for men: Men also produce estradiol (via aromatase conversion of testosterone). Too much estradiol in men can cause water retention, mood changes, and breast tissue sensitivity. Too little can affect bone density and libido. Monitoring estradiol is essential for men on testosterone optimization.
What it measures: The primary progestogenic hormone, produced by the ovaries (and adrenal glands in smaller amounts).
Why it matters: Progesterone balances estrogen, supports sleep (via its metabolite allopregnanolone), protects the uterine lining, and promotes neurological calm. Progesterone often declines before estrogen during perimenopause, creating a state of relative estrogen dominance that can cause anxiety, sleep disruption, and irregular bleeding.
Relevant for: Women experiencing mood changes, sleep disruption, or perimenopausal symptoms. Essential for estrogen and progesterone balancing.
What it measures: The sulfated form of DHEA, a precursor hormone produced by the adrenal glands.
Why it matters: DHEA serves as a building block for both testosterone and estrogen. Low DHEA-S can indicate adrenal fatigue or chronic stress and may contribute to fatigue, low libido, and poor immune function. It’s a key marker for evaluating adrenal health.
What it measures: A protein produced by the liver that binds to testosterone, estradiol, and DHT, making them biologically unavailable.
Why it matters: SHBG acts as a gatekeeper for hormone availability. High SHBG means more testosterone is bound and inactive, even if total testosterone looks normal. Low SHBG can lead to excess free hormones and metabolic complications. SHBG is influenced by liver health, thyroid function, insulin resistance, and body composition.
Understanding SHBG is essential for interpreting testosterone and estradiol levels accurately.
Thyroid hormones regulate metabolism, energy, body temperature, cognitive function, and mood. A complete thyroid assessment requires more than just TSH.
What it measures: A pituitary hormone that signals the thyroid gland to produce hormones. High TSH suggests the thyroid is underperforming; low TSH suggests overactivity.
Why it matters: TSH is the standard screening test, but it alone is insufficient. A “normal” TSH can mask subclinical thyroid dysfunction, especially when Free T3 is low.
What it measures: The active thyroid hormone that drives metabolism at the cellular level.
Why it matters: Free T3 is the most biologically active thyroid hormone. Many patients with “normal” TSH have low Free T3 — meaning the thyroid is producing hormones, but the active form isn’t reaching cells effectively. Symptoms include fatigue, weight gain, cold intolerance, and brain fog.
What it measures: The precursor thyroid hormone that converts to T3 in peripheral tissues.
Why it matters: Free T4 reflects thyroid output. Comparing T4 to T3 levels reveals whether conversion is happening efficiently. Poor T4-to-T3 conversion is a common finding in patients with thyroid imbalance.
What it measures: A protein produced by the liver in response to growth hormone (GH). It’s the primary circulating marker for GH status.
Why it matters: GH itself is released in pulses and has a very short half-life, making direct measurement unreliable. IGF-1 provides a stable snapshot of overall GH activity. Low IGF-1 in the context of symptoms like poor sleep, slow recovery, and increased body fat may indicate candidacy for sermorelin therapy or other peptide protocols.
What they measure: Blood sugar and the hormone that regulates it.
Why they matter: Insulin resistance is a common companion to hormonal imbalance. Elevated fasting insulin (even with normal glucose) indicates early metabolic dysfunction that can worsen hormonal symptoms, particularly weight gain and fatigue.
What they measure: Liver function, kidney function, electrolytes, blood sugar (CMP), and red/white blood cell counts and hematocrit (CBC).
Why they matter: These establish baseline organ function and detect any underlying conditions. For men on testosterone therapy, monitoring hematocrit is essential — testosterone stimulates red blood cell production, and elevated hematocrit requires management.
Depending on your clinical presentation, your provider may also order:
This is one of the most important concepts in hormone optimization — and one that separates age management medicine from conventional practice.
Standard reference ranges are based on population averages. They represent the statistical range where 95% of tested individuals fall, regardless of whether those individuals are healthy or symptomatic. A standard lab might report a total testosterone range of 264–916 ng/dL. A man at 280 ng/dL is technically “normal” — but he’s at the very bottom of the range and almost certainly experiencing symptoms.
Optimal ranges are narrower and based on the levels associated with peak vitality, function, and health. Providers trained in age management medicine, like Dr. Bruce Stratt, interpret labs using these optimal ranges to identify subclinical deficiencies that standard labs miss.
This distinction explains a frustrating experience many patients share: “My doctor said my labs are normal, but I feel terrible.” The labs may be within the standard range while still being far from optimal.
A comprehensive hormone panel is not a checklist of individual numbers — it’s a connected picture of your hormonal landscape. Your provider evaluates the markers in relation to each other:
This integrated interpretation is what allows your provider to design a targeted, individualized protocol — not a generic prescription.
If you’re getting labs for the first time at BHRT Boost:
A comprehensive hormone panel is the foundation of effective hormone therapy. It tells you not just whether your hormones are “normal” by population standards, but whether they’re at the levels associated with vitality, function, and long-term health. Without this data, any hormone protocol is a guess.
If you’ve been told your labs are “fine” but you don’t feel fine, it may be time for a more thorough evaluation — one that uses optimal ranges, tests the right markers, and interprets the results as a connected system.
BHRT Boost Clinical Team
Our clinical team combines decades of experience in hormone optimization, functional medicine, and patient-centered care. Every article is reviewed for medical accuracy and practical relevance.
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