Lab Tests

What do the results of an estrogen test mean?

A Answers (1)

  • AHealthwise answered

    An estrogen test measures the level of the most important estrogen hormones (estradiol, estriol and estrone) in a blood or urine sample.

    Results are usually available within 24 hours.


    For girls and women between puberty and menopause, estrogen levels vary throughout the menstrual cycle.

    The normal values listed here, called a reference range, are just a guide. These ranges vary from lab to lab, and your lab may have a different range for what's normal. Your lab report should contain the range your lab uses. Also, your doctor will evaluate your results based on your health and other factors. This means that a value that falls outside the normal values listed here may still be normal for you or your lab.

    Estrogen levels in blood

    • Women before menopause: 60–400 picograms per milliliter (pg/mL)
    • Women after menopause: Less than 130 pg/mL
    • Men: 10–130 pg/mL
    • Children: Less than 25 pg/mL


    Estriol in pregnant women

    1st trimester: Less than 38 nanograms per milliliter (ng/mL) 2nd trimester: 38–140 ng/mL  3rd trimester: 31–460 ng/mL


    Many conditions can change estrogen levels. Your doctor will discuss any significant abnormal results with you in relation to your symptoms and past health.

    High values may be caused by:

    • Ovarian stimulation used to treat infertility (for example, before in vitro fertilization ).
    • Cancer, such as cancer of the ovaries, testicles, or adrenal glands.
    • Serious liver disease ( cirrhosis ).
    • A pregnancy with more than one fetus, such as twins or triplets.
    • Early (precocious) puberty.

    Low values may be caused by:

    • Problems with ovarian function, which can be caused by a failure of an ovary to develop properly (Turner's syndrome) or because of a drop in pituitary gland activity.
    • Anorexia nervosa.
    • Menopause.
    • A problem with the fetus or placenta during pregnancy.

    This information does not replace the advice of a doctor. Healthwise disclaims any warranty or liability for your use of this information. To learn more visit

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