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Estriol (E3) Blood Test

  • CLIA Certified Labs
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Measuring estriol levels can help assess how well the pregnancy is developing.

  • Sample Type: Blood
  • Results: 3-11 days
  • Age: 18+

This test measures the level of estriol in the blood. Estriol (E3) is one of the three main components of estrogen, along with estradiol and estrone. During pregnancy, estriol is produced by the placenta. Concentrations of estriol typically begin to rise around the 8th week of pregnancy and continue to increase as the pregnancy progresses. At about four weeks before the onset of labor, most women will experience a spike in estriol levels. Measuring estriol levels can help assess how well the pregnancy is developing. Abnormal estriol levels may indicate a problem with the pregnancy including the potential development of birth defects. A single estriol measurement is usually not very informative. Repeat testing to monitor how estriol levels are changing is typically more useful. Serial estriol testing is sometimes ordered, starting during the 2nd or 3rd trimester of pregnancy, especially in the case of high-risk pregnancy or for someone with a family history of difficult pregnancies.

No special preparation is required.

$45

+$15 service fee

Price does not include the Physician Service Fee ($6) and the Lab Collection Fee ($9). These non-refundable fees cover the ordering and oversight of lab tests and follow-up services when appropriate.

Next availability

Provided by Quest Diagnostics

Trustpilot

4.7 rating

How does it work?

  • Order Tests Online

    No doctor visit required for purchase. Choose from a wide range of panels and tests. Pay online with a credit or debit card — no insurance needed.
  • Go to the Lab for Sample Collection

    Complete your test sample collection during your scheduled appointment.
  • Get Fast Results Online

    We will email you when your results are ready. Access your Confidential Lab Record by logging in to your account. There you can view, save and print your results.

Why People Love Tripment

Lab Tests FAQs

No. At Tripment Health, we focus on providing transparent healthcare services to uninsured or under-insured individuals. We’ve negotiated prices directly with lab test facilities to make diagnostic lab panels available to individuals who would rather pay directly than go through a private or government-sponsored insurance carrier.

No. By purchasing a blood panel, you will not be able to submit any claim, bill, or other request for reimbursement to any insurer, third-party payer, or government health program. However, you can use your FSA and HSA card. 

You will receive a payment confirmation email, then an additional email confirming your appointment details (time and location of appointment, and QR code). You will need to present your QR code at the testing facility to check in.

No. One of our physicians will order the panels for you.

You must be 18 or over to be able to get tested.