science Lab Test

Women's Health Panel: What Your Results Mean

A women's health panel addresses four markers with particular relevance to female physiology and common health concerns. Estradiol (E2) is the dominant oestrogen that governs the menstrual cycle, fertility, bone density, cardiovascular protection, and mood. Folate (vitamin B9) is critical for cell division and DNA synthesis, and is especially vital before and during early pregnancy for preventing neural tube defects. Iron and ferritin form a paired assessment of iron status — serum iron reflects what is currently circulating, while ferritin reveals the body's stored iron reserves. Iron deficiency is the most common nutritional deficiency in women of reproductive age, driven primarily by menstrual blood loss. These four markers together provide a practical overview of a woman's hormonal and nutritional health.

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What It Tests

This panel measures estradiol (circulating oestrogen levels — highly variable depending on menstrual cycle phase, and dramatically lower after menopause), folate (serum folate status reflecting recent dietary intake and absorption of vitamin B9), iron (serum iron indicating the amount of iron currently in circulation, which fluctuates with meals and time of day), and ferritin (the iron storage protein — the most sensitive and early marker of iron deficiency, falling weeks to months before serum iron or haemoglobin become abnormal).

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Why It's Ordered

This panel is ordered for women experiencing fatigue or poor energy (commonly due to iron deficiency), irregular, heavy, or absent periods, symptoms of hormonal imbalance (mood changes, hot flushes, low libido, vaginal dryness), women planning pregnancy (pre-conception nutritional and hormonal assessment), women with suspected perimenopause or early menopause, and women with hair loss, brittle nails, or poor exercise tolerance often attributable to iron deficiency.

Markers in This Test

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Frequently Asked Questions

Why are iron AND ferritin both tested? expand_more

Iron and ferritin provide different and complementary information. Ferritin is the most sensitive early marker of iron depletion — it falls months before serum iron or haemoglobin change. Serum iron fluctuates widely with meals, time of day, and recent blood loss. Together, low ferritin with normal iron (without anaemia) represents the earliest stage of iron deficiency — already causing symptoms like fatigue and hair loss — that serum iron alone would miss.

At what ferritin level do symptoms of iron deficiency appear? expand_more

Symptoms of iron deficiency — particularly fatigue, hair loss, brain fog, and reduced exercise tolerance — often begin when ferritin falls below 30–50 ng/mL, even though the laboratory reference range may consider anything above 12 ng/mL as "normal." Many functional medicine and integrative practitioners use an optimal target of 50–100 ng/mL for symptom resolution, particularly for hair loss.

How does estradiol affect iron levels in women? expand_more

Estradiol stimulates erythropoiesis (red blood cell production), which increases iron demand. When estradiol falls — during perimenopause and after menopause — red blood cell turnover decreases and menstrual blood loss ceases, so postmenopausal women rarely develop iron deficiency. Conversely, women with oestrogen-driven heavy periods (fibroids, endometriosis, adenomyosis) lose more blood and are at highest risk of iron deficiency.

How much folate do women need before pregnancy? expand_more

Current recommendations advise all women planning pregnancy to take 400–800 µg of folic acid daily, starting at least one month — ideally three months — before conception and continuing through the first trimester. Women with a previous pregnancy affected by a neural tube defect, or those on medications that interfere with folate (methotrexate, anticonvulsants), are advised to take a higher dose of 4–5 mg daily under medical supervision.

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