Test library
Sensitive Estradiol Test
An estradiol sensitive test uses a high-sensitivity assay to measure estradiol, the primary form of estrogen. It supports detailed hormone evaluation in men and women.
Order Estradiol Test, Ultrasensitive
Order online and visit a local collection site, or choose an at-home kit where available. No referral and no insurance required.
Order Estradiol Test, Ultrasensitive- Typical turnaround
- 1-3 business days
- Starting price
- From $198
- Results
- Confidential, online
Quick answer
An estradiol sensitive test measures estradiol, the main form of estrogen, using an assay designed to detect low concentrations with greater precision. It is often chosen when a provider needs detailed information about hormone balance, including in men, postmenopausal women, or people using hormone therapies. Results are interpreted by a qualified healthcare provider.
What this test measures
Estradiol plays a central role in the menstrual cycle, reproductive health, and bone strength in women, and it is present at lower levels in men. Standard immunoassays can be less accurate when estradiol concentrations are low, so a sensitive assay, often based on mass spectrometry, is used when precise measurement matters, such as in men or after menopause.
The test uses a serum sample collected from a vein. In menstruating women, the day of the cycle can influence the result, and a provider may specify when to collect. In men, morning collection is often suggested because hormone levels follow daily rhythms. Results are typically considered together with other hormone markers.
People may order this test as part of a fertility evaluation, a menopause-related assessment, a review of hormone-related symptoms in men, or monitoring during hormone therapy. Because interpretation depends on age, sex, cycle timing, and treatment context, a qualified healthcare provider should explain what the value means for you.
- Estradiol (sensitive assay)
- Total testosterone (when included)
- Sex hormone-binding globulin (when included)
- Luteinizing hormone (LH)
- Follicle-stimulating hormone (FSH)
- Progesterone (when included)
- Prolactin (when included)
Why people order this test
- Detailed hormone evaluation
- Fertility-related assessment
- Menopause-related review
- Monitor hormone therapy with a provider
- Evaluate low estradiol concerns in men
- Part of a broader hormone panel
How to prepare
Timing may matter: in menstruating women a provider may specify the cycle day, and morning collection is often suggested for men. Fasting is not usually required. A blood sample is collected from a vein. Follow the instructions provided with your order.
Understanding your results
Results are generally available within 1-3 business days. Reference ranges vary by sex, age, and cycle timing, so the value is interpreted in context rather than against a single range. A qualified healthcare provider should explain what the result suggests for your situation.
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Frequently Asked Questions
What makes a sensitive estradiol assay different?
Sensitive assays, often based on mass spectrometry, are designed to measure low estradiol concentrations more accurately than standard immunoassays.
Why does collection timing matter?
Estradiol changes through the menstrual cycle and follows a daily rhythm, so timing can affect the result. A provider may specify when to collect the sample.
Who might order this test?
It may be ordered during fertility evaluation, menopause assessment, hormone therapy monitoring, or evaluation of hormone-related concerns in men.
Do I need to fast?
Fasting is not usually required for estradiol testing unless other panel components call for it.
Can one result diagnose a hormone condition?
No. Results are interpreted with other hormone tests, symptoms, and history by a qualified healthcare provider.
Ready to get tested?
Order online and visit a collection site near you, or choose a mail-in kit. No referral and no insurance required.
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