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Alternative names
E2Definition Return to top
An estradiol test measures the amount of estradiol in the blood.How the test is performed Return to top
Blood is drawn from a vein, usually from the inside of the elbow or the back of the hand. The puncture site is cleaned with antiseptic, and a tourniquet (an elastic band) is placed around the upper arm to apply pressure and restrict blood flow through the vein. This causes veins below the tourniquet to fill with blood.
A needle is inserted into the vein, and the blood is collected in an air-tight vial or a syringe. During the procedure, the tourniquet is removed to restore circulation. Once the blood has been collected, the needle is removed, and the puncture site is covered to stop any bleeding.
Infant or young child:
The area is cleansed with antiseptic and punctured with a sharp needle or a lancet. The blood may be collected in a pipette (small glass tube), on a slide, onto a test strip, or into a small container. A bandage may be applied to the puncture site if there is any continued bleeding.
How to prepare for the test Return to top
Consult the health care provider about the need to discontinue drugs that can affect test results, including:How the test will feel Return to top
When the needle is inserted to draw blood, some people feel moderate pain, while others feel only a prick or stinging sensation. Afterward, there may be some throbbing.Why the test is performed Return to top
This test is used to evaluate ovarian, placental, or adrenal function, particularly when certain types of ovarian tumor are suspected, or when there is delayed or abnormal development of male or female body characteristics. In assisted reproductive technology (ART), serial measurements of serum estradiol and ultrasound imaging of ovarian follicles are used to monitor the ovarian response to stimulation.Normal Values Return to top
Male: 10 to 60 pg/mlWhat abnormal results mean Return to top
Greater-than-normal levels may indicate ovarian tumor.
Lower-than-normal levels may indicate Turner's syndrome.
People with these conditons may also be tested:What the risks are Return to top
Special considerations Return to top
Veins and arteries vary in size from one patient to another and from one side of the body to the other. Obtaining a blood sample from some people may be more difficult than from others. Update Date: 10/18/2003 Updated by: Francisco L. Gaudier, M. D., Maternal Fetal Medicine, Jacksonville, FL. Review provided by VeriMed Healthcare Network.
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Page last updated: 28 October 2004 |