Lab test
Estradiol Test, Ultrasensitive
This ultrasensitive estradiol test measures very low concentrations of estradiol in the blood using a more sensitive assay.
- Typical price
- From $198
- Results
- 1-3 business days
- Preparation
- See preparation notes below
- Sample
- Blood draw or sample collection at a local center
About this test
This ultrasensitive estradiol test measures very low concentrations of estradiol in the blood using a more sensitive assay. Standard estradiol testing can be less reliable at the low end of the range, so an ultrasensitive method is often chosen when small changes matter. Estradiol is the most potent estrogen and is produced mainly by the ovaries in women, with contributions from the adrenal glands and other tissues. The test may be used to monitor hormone-related care, assess ovarian function, or evaluate low estrogen states. Results are interpreted with age, sex, and the clinical context.
What this test measures
- Estradiol (ultrasensitive) Estradiol measured with a highly sensitive assay able to detect low concentrations.
Who this test may be right for
- People receiving hormone-related care who need low-level monitoring
- Women being evaluated for low estrogen states
- Individuals whose standard estradiol result was difficult to interpret
- Men being assessed for certain hormone concerns
Before your visit
- Cycle timing can affect estradiol in women; confirm the preferred collection day with your provider
- Report hormone medications or contraceptives to the laboratory
- Follow any instructions that come with your order
Understanding your results
The ultrasensitive method reports estradiol against reference ranges appropriate to sex, age, and cycle phase. Values that are low may suggest reduced estrogen production, while elevated values may reflect increased production or medication effects. Because the assay is designed for low concentrations, it can be more informative when standard testing is near the detection limit. A healthcare provider should interpret the result together with symptoms and other hormone measurements.
Order this test online
- Buy online in a few minutes - no doctor's visit needed for most tests.
- Sample collection at a patient service center near you.
- Results are typically ready within 1-3 business days.
- Secure, lab-reviewed results delivered to your account.
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Questions people ask
Why order an ultrasensitive estradiol test instead of a standard one?
An ultrasensitive assay can measure estradiol more accurately at low concentrations, which is useful when small differences in estradiol matter.
Is estradiol the same as estrogen?
Estradiol is one specific form of estrogen; other forms such as estrone and estriol also exist, but estradiol is the most potent.
Can the collection day affect my estradiol result?
Yes. Estradiol changes across the menstrual cycle, so the day of collection is recorded and considered when results are interpreted.
Does this test diagnose a condition?
No. It provides a measurement that a healthcare provider interprets with your history and other findings.
What does the Estradiol Test, Ultrasensitive measure?
Order Estradiol Test, Ultrasensitive.com online through our partner and visit a local lab near you.
Do I need to fast before this test?
Follow the lab's instructions.
How long do results take?
Most Estradiol Test, Ultrasensitive results are released in 1-3 business days. Specialty testing can take longer.
Is this test right for me?
This page is educational and not medical advice. Talk to a licensed healthcare provider about which tests fit your situation.
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Laboratory services are provided by independent, CLIA-certified testing partners. Availability, pricing, and turnaround times can vary by location and are confirmed at checkout.