For women and men — what those numbers really mean, and why “normal” isn’t the same as “balanced”
By Mallory Jones, FNP-BC | Lighthouse EverLucent Health™
🧭 The Big Picture: What Your Labs Are Telling You
● Your hormone labs are like a dashboard — they show how well your body’s “engine” is running.
But here’s the key:
● Hormones shift with age, stress, sleep, nutrition, and (for women) your menstrual cycle.
● “Normal” lab ranges are broad — they’re designed to catch disease, not define your personal best.
● You can be “in range” and still feel tired, anxious, or “off.”
● Understanding balance — not just numbers — matters most.
🧪 Getting Accurate Labs (So Your Plan Fits You)
● Pause certain supplements: High-dose biotin can skew thyroid and hormone results (stop ≥48 hours before testing).
● Vitamin D or B12: High doses can temporarily elevate levels — some clinicians suggest holding for ~7 days pre-lab.
● Timing:
○ Men — testosterone is highest in the morning; diagnosis usually needs two separate early-morning tests plus symptoms.
○ Women — test estradiol and progesterone at specific cycle phases (see below).
🧬 Vitamin D & B12 — The “Under-the-Radar” Hormone Helpers
🌞 Vitamin D
● Supports hormone receptor sensitivity, metabolic function, and thyroid signaling.
● Low D is linked with lower testosterone, worsened insulin resistance, and fatigue.
● Clinicians often aim for a 40–60 ng/mL zone (personalized to your case).
💡 Tip: Guidelines now discourage rigid “one-number” targets — discuss individualized goals with your provider.
💉 Vitamin B12
● Crucial for nerve health, red blood cell formation, and hormone metabolism.
● Low B12 can blunt how well HRT “lands,” even when sex-hormone levels look okay.
● If you use metformin, PPIs, or have GI issues, absorption may drop — sublingual or injection routes often work best.
● Many aim for > 600 pg/mL for optimal energy and cognition.
💪 Testosterone (for Men & Women)
| Who | Typical Range* | What It Means |
|---|---|---|
| Men | ~300–1000 ng/dL (total) | Below 300 → fatigue, low libido, low drive. Gradual decline with age. |
| Women | ~10–55 ng/dL (total) | Supports mood, motivation, muscle tone. Too high → acne, unwanted hair (often PCOS). |
Free vs Total Testosterone
● Total T = everything circulating in blood.
● Free T = what your body can actually use.
High SHBG can “lock up” testosterone — like money in the bank, not in your wallet.
⚖️ SHBG (Sex Hormone Binding Globulin)
Your hormone taxi service — it carries estrogen and testosterone.
| Pattern | Effect | Common Causes |
|---|---|---|
| High SHBG | Less free hormone → fatigue, low libido | Estrogen therapy, birth control, thyroid meds, aging |
| Low SHBG | More free hormone → acne, oily skin | Insulin resistance, PCOS, stress, high sugar |
🌸 Estrogen (Estradiol / E2)
Estrogen builds bone, brain, and reproductive tissue — your growth and mood hormone.
| Life Stage | What’s Happening | Typical Range (pg/mL) |
|---|---|---|
| Early cycle (day 2–4) | Lowest point | 20–80 |
| Mid-cycle (ovulation) | Peak fertility | 200–400 |
| Luteal phase | Moderate rise | 70–250 |
| Post-menopause | Ovaries resting | < 20–35 |
● Too little → hot flashes, dryness, mood dips.
● Too much → bloating, breast tenderness, heavy cycles.
🌙 Progesterone (P4)
Your calming, sleep-supporting hormone — balances estrogen.
| Phase | Typical Range (ng/mL) | Meaning |
|---|---|---|
| Pre-ovulation | < 1 | Normal to be low |
| Mid-luteal (~day 21) | 5–20 | Confirms ovulation |
| Post-menopause | < 0.5 | Expected to be low |
● Low P4 = PMS, anxiety, irregular cycles, “estrogen dominance.”
● Bioidentical micronized progesterone has been shown in studies to improve sleep onset.
💥 Estrogen Dominance
● Means estrogen outweighs progesterone (even if estrogen is “normal”).
● Signs: PMS, heavy periods, irritability, poor sleep, bloating, breast tenderness.
● Causes: Skipped ovulation, stress, perimenopause, insulin resistance, or excess estrogen exposure.
💥 DHEA & DHEA-S — Your “Adrenal Spark Plug”
● Made in the adrenal glands; helps build estrogen & testosterone.
● High → acne, hair growth (often PCOS).
● Low → chronic stress, fatigue, aging.
DHEA peaks in your 20s → declines ~2–3 % per year.
🧬 LH & FSH — Brain Signals to Gonads
| Hormone | Role | High / Low Means |
|---|---|---|
| LH | Triggers ovulation / T production | High mid-cycle = ovulation; High + low E2 = menopause |
| FSH | Matures follicles / sperm | High = ovarian slowdown or menopause |
Men: High LH/FSH + low T → testicular cause.
Low LH/FSH + low T → pituitary cause.
Women: FSH > 30 → often menopause.
🔄 Hormones Work as a Network
● Estrogen ↔ Thyroid ↔ Androgens: Low estrogen can mimic low thyroid/T symptoms.
● SHBG links to insulin — improving blood sugar balance often improves hormone balance.
● Cortisol (stress) suppresses sex-hormone production — sleep and strength training restore rhythm.
📉 How Hormones Change with Age
| Decade | Men | Women |
|---|---|---|
| 20s | Peak T & DHEA | Regular cycles, high E2 / P4 |
| 30s | Slight decline | Early perimenopause changes |
| 40s | Gradual T drop | Irregular ovulation → lower P4 |
| 50s + | Slower metabolism | Menopause = low E2/P4, high FSH/LH |
👩⚕️ Women: Perimenopause & Menopause Labs
| Hormone | Typical Range* | Key Notes |
|---|---|---|
| FSH | Reproductive 1–10 → Post-M 19–100 IU/L | Fluctuates; high + low E2 = menopause |
| Estradiol (E2) | 10–300 pg/mL (pre) / <10 pg/mL (post) | Highly variable in perimenopause |
| Progesterone | 4–30 ng/mL (luteal) / <0.3 (post) | Confirms ovulation if cycling |
| LH | 2–8 IU/L (pre) / >15 (post) | Rises as ovaries slow |
| Testosterone | 15–70 ng/dL | Free T often more meaningful |
| SHBG | 40–120 (pre) / 28–112 (post) | Changes with weight, insulin, thyroid |
In perimenopause, fluctuation is the rule — patterns and symptoms matter more than single values.
Common symptoms → hot flashes, sleep issues, brain fog, mood swings, vaginal dryness, midline weight gain.
🧔 Men: Understanding TRT Labs
| Lab | What It Shows | Typical Range | Watch For |
|---|---|---|---|
| Total T | Overall amount | 300–1000 ng/dL | Need ≥ 2 low AM tests + symptoms |
| Free T | Active portion | Lab-dependent | Low despite normal total = SHBG issue |
| Estradiol (E2) | Converted from T | ~10–42 pg/mL | Too high → water retention/mood |
| CBC (Hct/Hgb) | Red cells | Hct 38–50 % | > 54 % → thicker blood risk |
| PSA | Prostate screen | < 4 ng/mL | Check baseline + monitor |
| LH / FSH | Brain signals | LH 1–8 IU/L / FSH 1.5–12 mIU/mL | Helps find primary vs secondary low T |
TRT goal = symptom relief within safe range, not maximal numbers.
Monitor hematocrit, lipids, PSA, and mood — adjust dose carefully.
🔢 “Normal” vs “Optimal”
“Normal” = within the wide lab curve.
“Optimal” = where you feel your best.
● Men often thrive around 600–800 ng/dL T.
● Women may feel balanced when mid-luteal P4 ≈ 10 ng/mL.
● Your clinician should align labs + symptoms — not just read the range.
💬 What to Ask Your Provider
● “When in my cycle should we re-check these?”
● “My free T is low but SHBG is high — what can help?”
● “Can we compare progesterone and estrogen together?”
● “Can we aim for optimal, not just ‘normal’?”
● “Should we monitor vitamin D, B12, iron, or thyroid alongside hormones?”
🌿 Key Takeaways
● Labs are tools, not verdicts — they must match symptoms.
● Hormones shift with stress, sleep, nutrition, and age.
● Balance (E2 ↔ P4, free ↔ bound) > single numbers.
● Vitamin D & B12 optimize how hormones work.
● You deserve to understand your results — and feel empowered to ask questions.
📚 References
● Bhasin S et al. Testosterone Therapy in Men With Hypogonadism, J Clin Endocrinol Metab, 2018.
● North American Menopause Society (NAMS). 2022 Hormone Therapy Position Statement.
● American Urological Association. Testosterone Deficiency Guideline.
● Contemporary OB/GYN. New Hormone Therapy Guidelines from NAMS.
