Also called: Oestriol, E3, Pregnancy Estriol
Report
{context.blood_test.parameters} Parameters
What it checks
Report delivery
Test for
Age group
Commonly advised for
Unconjugated Estriol (uE3) is a form of estrogen produced mainly during pregnancy by the placenta and fetal liver. Measuring uE3 is an essential part of prenatal screening tests, especially the triple or quad marker test, to assess fetal well-being and chromosomal abnormality risk.
Why Is This Test Recommended?
This test is recommended for:
Prenatal screening
Assess placental function
Detect chromosomal abnormalities
Monitor high-risk pregnancies
Understanding Estriol (E3)
Low levels may indicate fetal growth restriction or chromosomal abnormalities, while normal levels suggest healthy placental function.
Who Needs This Test?
Pregnant women (2nd trimester)
High-risk pregnancies
How Do I Prepare for the Test?
No fasting required. Gestational age must be accurate for proper interpretation.
How Is the Test Performed?
A blood sample is collected from a vein in your arm.
What Do the Results Mean?
Low uE3: Possible fetal compromise or chromosomal abnormality
Normal uE3: Healthy pregnancy indicator
Frequently Asked Questions (FAQs)
Is this test done outside pregnancy?
Rarely; uE3 is primarily measured during pregnancy as part of prenatal screening panels.
Is it diagnostic?
No, screening only; abnormal results require confirmatory tests like amniocentesis or detailed ultrasound.
Does maternal age affect results?
Yes, maternal age is factored into risk calculations along with uE3 levels for accurate screening.
Is fasting required?
No, fasting is not required for the uE3 test.
Is repeat testing needed?
Sometimes; if initial results are abnormal or if gestational age dating was uncertain, repeat testing may be recommended.
Unconjugated Estriol is one of the markers used in second-trimester pregnancy screening. It is meant for:
Tapadia Diagnostic Centre in Visakhapatnam offers NABL-accredited Estriol Unconjugated (E3) Test test from a Blood sample(s). Oestriol, E3, Pregnancy Estriol is also prescribed for Abnormal bleeding, fetal movement changes, pregnancy concerns. Established in 1989, this doctor-led diagnostic centre ensures high accuracy. Home sample collection and walk-in facility available at our Visakhapatnam center. Pay at the centre with no advance payment. Book online or visit us.
Estriol Unconjugated (E3) Test in Visakhapatnam
Rated 4.6 on Google
From 6,477 patient reviews across our Hyderabad centres.
Every report, kept for you
Past reports stay in your account and can be downloaded again.
NABL accredited
Every result reviewed by a qualified pathologist before it reaches you.
Four decades of practice
A family-run diagnostic centre, trusted by doctors and households since 1989


Estriol Unconjugated (E3) Test in Vijayawada
Estriol Unconjugated (E3) Test in Visakhapatnam
Estriol Unconjugated (E3) Test in Ahmedabad
Estriol Unconjugated (E3) Test in Bengaluru
Estriol Unconjugated (E3) Test in Mumbai
Estriol Unconjugated (E3) Test in Secunderabad
Estriol Unconjugated (E3) Test in Karimnagar
Estriol Unconjugated (E3) Test in Hyderabad
Estriol Unconjugated (E3) Test in Warangal
Estriol Unconjugated (E3) Test in Aurangabad
HIV 1 & 2 Antibodies, Serum-Elisa Method in Visakhapatnam
Dengue IgG, IgM Antibodies + NS1 Antigen-Rapid, Serum in Visakhapatnam
Lipoprotein A (Lp A), Serum in Visakhapatnam
Erythrocyte Sedimentation Rate (ESR) in Visakhapatnam
Thyroxine Total (T4), Serum in Visakhapatnam
Triiodothyronine Total (T3), Serum in Visakhapatnam
CA 19.9 (Pancreatic Cancer Marker), Serum in Visakhapatnam
NIPT with Microdeletions in Visakhapatnam
NIPT Basic in Visakhapatnam
Complete Blood Picture (CBP) in Visakhapatnam
Serum Phosphorus Test in Visakhapatnam
TIBC in Visakhapatnam
Urology Profile in Visakhapatnam
Beta HCG Free, Serum (Pregnancy Test) in Visakhapatnam
Viral Screening in Visakhapatnam
AFP Test in Visakhapatnam
Microalbuminuria test in Visakhapatnam
Diabetes Testing (FBS + PLBS) in Visakhapatnam
Antithrombin III in Visakhapatnam
D-dimer test in Visakhapatnam
Creatine Kinase (CK) Test in Visakhapatnam
AST Test in Visakhapatnam
Cardiac Markers in Visakhapatnam
Pap Smear - LBC in Visakhapatnam
DVT Profile in Visakhapatnam
Bleeding Time and Clotting Time (BT & CT) in Visakhapatnam
Estradiol Test in Visakhapatnam
hs-CRP Test in Visakhapatnam
Alkaline Phosphatase (ALP) Test in Visakhapatnam
Fertility Profile in Visakhapatnam
Albumin blood test in Visakhapatnam
Troponin T in Visakhapatnam
Infertility Profile Extended in Visakhapatnam
Electrolyte Panel in Visakhapatnam
Anticardiolipin Antibodies (IgG) in Visakhapatnam
PSA Test in Visakhapatnam
FSH Test in Visakhapatnam
STD Panel in Visakhapatnam
PCOS Profile in Visakhapatnam
Serum Iron Test in Visakhapatnam
Cardiac Profile-III in Visakhapatnam
Plasma Fibrinogen Test in Visakhapatnam
HBsAg Test in Visakhapatnam
Cardiac Biomarker Test in Visakhapatnam
Herpes Simplex Virus (HSV) Types 1 and 2 Antibody Test in Visakhapatnam
Antenatal Profile in Visakhapatnam
Activated Partial Thromboplastin Time in Visakhapatnam
Lipid Panel in Visakhapatnam
Fine Needle Aspiration Cytology in Visakhapatnam
CRP test in Visakhapatnam
Joint Pain / SLE / Collagen Profile-I in Visakhapatnam
PAPP-A Test in Visakhapatnam
Insulin Test in Visakhapatnam
Triple Screen Test in Visakhapatnam
Anti-HCV Test in Visakhapatnam
Basic Metabolic Panel (BMP) in Visakhapatnam
Very low-density lipoprotein (VLDL) test in Visakhapatnam
Free Testosterone in Visakhapatnam
Triglycerides Test in Visakhapatnam
Quad Screen in Visakhapatnam
Folic Acid in Visakhapatnam
Urinalysis in Visakhapatnam
CEA Test in Visakhapatnam
Ferritin Test in Visakhapatnam
Transferrin Saturation% in Visakhapatnam
Protein C Antigen in Visakhapatnam
Alpha Feto Protein (AFP) - Fluid in Visakhapatnam
CPK (MB) Test in Visakhapatnam
Lupus Anticoagulant Testing in Visakhapatnam
Reticulocyte Count in Visakhapatnam
Infertility Profile-Basic in Visakhapatnam
Beta hCG Test in Visakhapatnam
DIABETIC PROFILE in Visakhapatnam
LH Test in Visakhapatnam
Anti-Müllerian Hormone (AMH) Test in Visakhapatnam
Bile Salts and Bile Pigments, Urine in Visakhapatnam
HbA1c in Visakhapatnam
Vitamin D (1,25-Dihydroxyvitamin D) in Visakhapatnam
Liver Function Test (LFT) in Visakhapatnam
Anemia Profile Basic in Visakhapatnam
Rheumatoid Factor in Visakhapatnam
Widal Test in Visakhapatnam
Bilirubin blood test in Visakhapatnam
Inhibin A, Tumor Marker, Serum in Visakhapatnam
Thyroid Function Tests in Visakhapatnam
eGFR in Visakhapatnam
Menopause Profile in Visakhapatnam
EXTENDED DIABETIC PROFILE in Visakhapatnam
LDH Test in Visakhapatnam
Total Cholesterol Test in Visakhapatnam
Random Blood Sugar Test in Visakhapatnam
Total Protein Test in Visakhapatnam
RPR test in Visakhapatnam
Anti-dsDNA Test in Visakhapatnam
HDL Cholesterol in Visakhapatnam
Blood Type Test in Visakhapatnam
ASO Titre in Visakhapatnam
Blood Urea(Serum) Test in Visakhapatnam
Postprandial Blood Sugar Test in Visakhapatnam
Back Pain Profile in Visakhapatnam
ANA test in Visakhapatnam
Serum Creatinine Test in Visakhapatnam
PT/INR Test in Visakhapatnam
Fasting Blood Sugar Test in Visakhapatnam
Extended Anemia Profile III Executive in Visakhapatnam
Kidney Function Test (Renal Profile) in Visakhapatnam
Serum Magnesium Test in Visakhapatnam
Well-woman exam in Visakhapatnam
LDL cholesterol test in Visakhapatnam
Prolactin Test in Visakhapatnam
Malaria Blood Smear in Visakhapatnam
Liver Function Test (+GGT) in Visakhapatnam
TPHA Test in Visakhapatnam
Hepatitis B Surface Antigen (HBsAg) Test in Visakhapatnam
Antenatal Profile 2 in Visakhapatnam
TSH Test in Visakhapatnam
Cardiac Catheterization in Visakhapatnam
Cardiolipin Antibody (IgM) in Visakhapatnam
Master Health Checkup in Visakhapatnam
Calcium Profile in Visakhapatnam
Coagulation Profile in Visakhapatnam
Uric Acid Test in Visakhapatnam
Vitamin D (25 - Hydroxy Vitamin D, Serum) in Visakhapatnam
Globulin Test in Visakhapatnam
Fever Profile Test in Visakhapatnam
Connective Tissue Disease Profile in Visakhapatnam
Calcium Blood Test in Visakhapatnam
IHC in Visakhapatnam
Estriol Unconjugated (E3) Test in Visakhapatnam
Blood Typing in Visakhapatnam
Vitamin B12 Test in Visakhapatnam
Serum Cortisol in Visakhapatnam
Double Marker Test in Visakhapatnam
Pap Smear, Conventional in Visakhapatnam
Protein S Activity in Visakhapatnam
Non-Invasive Prenatal Testing (NIPT) in Visakhapatnam
whole exome sequencing in Visakhapatnam
Newborn Screening (NBS) in Visakhapatnam
Renal Function Test (RFT) in Visakhapatnam