Lab test

E3-Estriol-Serum

The E3 – Estriol Serum Test is a blood test used to measure estriol levels, mainly during pregnancy, to assess fetal and placental health.
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SampleBlood
CollectionHome or centre
FastingNot needed
How it works
1
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Add to cart, pick a date and time slot, pay online or at collection.
2
Sample collected at home or centre
A trained phlebotomist arrives in your slot with sealed, single-use kits.
3
Report on WhatsApp
Within 24 hours on WhatsApp and under My Orders.
Preparation
No special preparation needed unless your doctor advises otherwise.
About this test
The E3 – Estriol Serum Test is a blood test used to measure estriol levels, mainly during pregnancy, to assess fetal and placental health.
E3-ESTRIOL-SERUM

This Test is a diagnostic blood test that measures the level of estriol, a form of estrogen produced in significant amounts during pregnancy. Estriol is produced by the placenta and fetus, making it an important marker for fetal well-being.

This test is commonly used as part of prenatal screening, including triple and quadruple marker tests, to assess the risk of chromosomal abnormalities and monitor fetal development.

The purpose of the test is to:

  • Measure estriol (E3) hormone levels
  • Assess fetal and placental health
  • Support prenatal screening tests
  • Help detect risk of chromosomal abnormalities

E3-ESTRIOL-SERUM Test

The Estriol (E3), Serum test measures the level of estriol, an estrogen hormone produced during pregnancy through the combined activity of the placenta and the developing baby. Estriol levels normally increase as pregnancy progresses.

Serum estriol is commonly included as one of the markers in maternal serum screening, particularly the second-trimester triple or quadruple screening tests. When interpreted together with other markers and maternal factors, estriol levels can help estimate the risk of certain fetal chromosomal conditions and pregnancy-related concerns.

An abnormal estriol level does not by itself confirm a fetal abnormality. Results are interpreted according to gestational age, maternal characteristics, ultrasound findings, and other screening markers.

This Test is Recommended for Individuals:

  • Pregnant women undergoing prenatal screening
  • Women undergoing second-trimester maternal serum screening
  • Individuals having a triple or quadruple marker test
  • Pregnant women requiring assessment of fetal and placental health as advised
  • Individuals whose healthcare provider recommends estriol measurement as part of a broader prenatal evaluation

FAQs

1. What does the serum Estriol (E3) test measure?
It measures estriol, an estrogen hormone produced during pregnancy through the interaction of the placenta and developing fetus.

2. When is estriol testing performed during pregnancy?
Estriol is commonly measured during the second trimester, particularly as part of triple or quadruple marker screening. The appropriate timing depends on the specific screening protocol.

3. Does a low estriol level mean there is a problem with the baby?
Not necessarily. Estriol levels can be influenced by several factors, including gestational age, maternal characteristics, and pregnancy conditions. An abnormal result requires interpretation alongside other screening markers and ultrasound findings.

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Questions people ask
How soon will I get my report?
Your report is delivered within 24 hours of sample collection — on WhatsApp and under My Orders.
Is home sample collection available?
Yes. A trained phlebotomist visits your home with sealed, single-use kits. Home collection is free.
Do I need to fast or prepare?
No fasting is required for this test unless your doctor advises otherwise.
How do I pay?
Pay online (UPI / cards) or pay at collection or at the centre. The price you see is what you pay — it includes the report, with no hidden charges.
Is the lab accredited?
Yes. Prima Diagnostics runs NABL-certified labs with strict quality control across 7 centres in Bengaluru.