- Fasting and prep
- No fasting needed. If you still have periods, your clinician may want the draw on a specific cycle day (often day 2 to 4). Follow the instructions on your lab order.
- Turnaround
- Usually 1 to 3 days.
- Also called
- e2 test, estradiol blood test, estrogen test, estradiol level
What it measures
The ovaries make most estradiol before menopause. Men make a smaller amount, mostly by converting testosterone in fat tissue. Levels change across the menstrual cycle and fall after menopause. Hormone therapy, birth control, testosterone therapy, obesity, and some fertility drugs move the number. Standard tests can read less accurately at very low levels, as in men or after menopause.
Who should consider it
- People with irregular, missing, or very heavy periods
- People going through fertility testing
- Anyone on estrogen or testosterone therapy whose clinician wants levels checked
- Men with breast tissue growth or symptoms of high estrogen
How to read your result
- Use the range printed on your report. Ranges depend on sex, cycle phase, and menopause status.
- Estradiol alone does not diagnose menopause. Symptoms and age carry more weight, and FSH adds context.
- Biotin supplements can interfere with some hormone tests. Tell the lab if you take them.
- In men, a high result often traces back to body fat or testosterone therapy.
Reference ranges differ between labs. Use the range printed on your own report.
What to do next
Discuss an abnormal result with a clinician, who may repeat it on a set cycle day and add FSH, LH, or testosterone.
Where to order Estradiol
These sellers include an independent physician order. You pay online and visit a partner lab. Availability, price, and lab network vary, so confirm at checkout.
Private MD Labs
Online lab seller- Order
- Every order reviewed by a physician. Says you pay $1 to start and the rest after results.
- Results
- Secure online portal with plain-English explanations. Says many results arrive overnight.
HealthLabs
Online lab seller- Order
- Online or by phone. No doctor referral or insurance needed.
- Results
- Secure HealthLabs account. Says 1 to 3 business days.
Walk-In Lab
Online lab seller- Order
- Online, no insurance or doctor order needed. Shows a $6 physician fee per order on popular tests.
- Results
- Online account. Turnaround not stated on its homepage.
Quest Health
Lab-run- Order
- Buy online and book a Quest appointment. An independent provider is involved.
- Results
- Online as soon as ready, with an email alert. Provider discussion included at no extra cost.
Seller details come from each seller's own site and can change. Confirm price, lab location, and state availability at checkout.
Ordering several tests? Plan them together · Filter all sellers
Questions people ask
What is a normal estradiol level?
It depends on your sex, age, and cycle phase. Use the range on your lab report and read it with a clinician.
Can estradiol confirm menopause?
Not on its own. Levels swing a lot during perimenopause, so clinicians diagnose menopause mostly from your periods and age.
Can I order an estradiol test without a doctor?
Yes. Many online lab sellers include it, alone or in hormone panels.
Related tests
- FSH and LHTwo pituitary hormones that drive the ovaries and testes.
- ProgesteroneChecks whether ovulation likely happened in a cycle.
- Total estrogenAdds up several estrogens; estradiol is usually more useful.
- Testosterone, totalChecks total testosterone when symptoms suggest it may be low.
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