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Alternative names
Follicle stimulating hormoneDefinition Return to top
An FSH test measures the amount of FSH (a hormone of the reproductive system) 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
Adults: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 may be performed when certain reproductive or pituitary disorders are suspected.Normal Values Return to top
Note: IU/L = international units per liter.
What abnormal results mean Return to top
Disorders that may be associated with abnormal FSH results include: Additional conditions under which the test may be performed: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 |