Estriol details
What Estriol shows
Estriol (E3) is a form of estrogen produced in significant amounts almost exclusively during pregnancy, made by the placenta using precursors supplied partly by the developing fetus. Because its production depends on a functioning fetal-placental unit, estriol has historically been used as part of certain prenatal screening panels (like the quad screen) to help assess risk for specific chromosomal conditions and neural tube defects, typically interpreted together with other markers like AFP and hCG rather than on its own. Outside of pregnancy, estriol has little clinical relevance.
Tests that include Estriol
Estriol (E3) is a weak estrogen primarily produced during pregnancy by the placenta. It is commonly measured to monitor fetal health and placental function.
- Estriol A form of estrogen produced mainly during pregnancy by the placenta. Used in prenatal screening for certain fetal conditions.
Estriol (E3) is a weak estrogen primarily produced during pregnancy by the placenta. It is commonly measured to monitor fetal health and placental function.
- Estriol A form of estrogen produced mainly during pregnancy by the placenta. Used in prenatal screening for certain fetal conditions.
This panel measures the concentrations of estrone, estradiol, and estriol, the 3 main types of estrogens in serum. This panel may be useful in assessing estrogen status.
- Estradiol, Ultrasensitive, LC/MS A more precise version of the estradiol test, able to detect the very low levels typical in men, children, and postmenopausal women.
- Estriol A form of estrogen produced mainly during pregnancy by the placenta. Used in prenatal screening for certain fetal conditions.
- Estrone One of the three main forms of estrogen, produced mainly by fat tissue and more prominent after menopause. Reflects overall estrogen status.
Not sure how to read your results? We can help.
Schedule a consultation with a Hormunity specialist. We’ll walk through every marker, interpret what it means for you, and map out the next steps for your care.
Book a specialist