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The EllaDx Blog

Real talk about women's health, lab testing demystified, and the biomarkers your doctor might not be checking.

Fatigue
January 15, 2026

Ferritin: The Iron Marker Your Doctor Probably Isn't Checking

You're exhausted, losing hair, and can't focus. Your doctor runs iron labs and says you're "fine." But did they check your ferritin? This overlooked biomarker reveals your iron stores - and optimal levels for women are much higher than the "normal" range suggests.

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Thyroid
January 12, 2026

Why TSH Alone Won't Tell You If Your Thyroid Is Healthy

Millions of women have "normal" TSH but still feel terrible - weight gain, fatigue, brain fog, hair loss. A complete thyroid panel includes Free T3, Free T4, reverse T3, and thyroid antibodies. Here's why each marker matters and what optimal ranges actually look like.

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Fertility
January 10, 2026

AMH: What Your Ovarian Reserve Test Actually Means

Anti-Mullerian Hormone (AMH) is the most reliable marker for ovarian reserve - yet most women have never heard of it. Learn what AMH measures, when to test it, and why knowing your number can help you make informed decisions about your reproductive future.

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Hormones
January 8, 2026

The Complete PCOS Lab Panel: Tests Your Doctor Should Order

PCOS affects 1 in 10 women, yet many wait years for a diagnosis. The right lab panel - including testosterone, DHEA-S, LH:FSH ratio, fasting insulin, and SHBG - can reveal the metabolic and hormonal patterns behind your symptoms. Here's what to test and why.

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Nutrition
January 5, 2026

Vitamin D Deficiency: Why "Normal" Isn't Optimal for Women

Up to 42% of Americans are vitamin D deficient - and women are at higher risk. Low vitamin D is linked to fatigue, depression, weakened immunity, and even fertility issues. Find out why the standard "normal" range of 30 ng/mL may be too low and what level you should actually aim for.

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Hormones
January 3, 2026

Perimenopause Symptoms Dismissed as "Stress": What to Test

Hot flashes, night sweats, mood swings, irregular periods - perimenopause can start in your late 30s, but many women are told they're "too young." Learn which hormone markers (FSH, estradiol, progesterone) can confirm perimenopause and help you advocate for proper care.

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Fatigue
December 28, 2025

B12 Deficiency: The Hidden Cause of Brain Fog and Fatigue

Vitamin B12 deficiency is surprisingly common in women - especially vegetarians, those on hormonal birth control, or taking metformin. Symptoms mimic depression and chronic fatigue. Here's why standard B12 tests can miss deficiency and which markers provide a clearer picture.

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Hormones
December 22, 2025

Insulin Resistance: Why Your Blood Sugar Is "Normal" But You Still Struggle

Standard glucose tests can be normal for years while insulin resistance silently develops. Fasting insulin and HOMA-IR reveal metabolic dysfunction long before diabetes diagnosis. Learn why women with PCOS, stubborn weight gain, or fatigue should test these markers.

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Thyroid
December 18, 2025

Hashimoto's: The Autoimmune Thyroid Condition Affecting 1 in 8 Women

Hashimoto's thyroiditis is the most common autoimmune disease - and women are 7x more likely to develop it than men. Yet many are never tested for thyroid antibodies (TPO, TgAb). Here's what Hashimoto's looks like, why standard thyroid tests miss it, and what to ask for.

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Hormones
December 15, 2025

Cortisol and Chronic Stress: What Your Adrenals Are Trying to Tell You

Chronic stress doesn't just feel bad - it shows up in your labs. Cortisol dysregulation affects sleep, weight, energy, and even your other hormones. Learn how cortisol testing works, what "adrenal fatigue" really means, and why DHEA-S is an important companion marker.

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Hormones
December 10, 2025

Estrogen Dominance: When High Estrogen Meets Low Progesterone

Heavy periods, PMS, breast tenderness, fibroids, and mood swings can all signal estrogen dominance - a hormone imbalance where estrogen overpowers progesterone. Learn how to test your estrogen-to-progesterone ratio and why testing on the right day of your cycle matters.

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Nutrition
December 5, 2025

The Magnesium Gap: Why 75% of Women Don't Get Enough

Magnesium is involved in over 300 enzymatic reactions - from sleep to muscle function to blood sugar regulation. Yet most women are deficient. Discover why serum magnesium tests often miss deficiency, what symptoms to watch for, and how magnesium affects everything from PMS to migraines.

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