Gonadotropin Releasing Hormone (GNRH) Blood test
Gonadotropin-Releasing Hormone (GNRH) Blood test
This test measures the level of gonadotropin-releasing hormone (GnRH) in a blood sample. GnRH is produced in the hypothalamus and travels to the pituitary gland to stimulate the production of follicle-stimulating hormone (FSH) and luteinizing hormone (LH). Gonadotropin-releasing hormone is sometimes known as luteinizing hormone-releasing hormone (LHRH). FSH and LH control the levels of hormones including testosterone, estradiol, and progesterone which are essential to normal reproductive function. Deficiencies in GnHR can cause deficiencies in other vital hormones. Excessive GnHR levels are sometimes caused by tumors on the pituitary gland.
Because of GnRH's relationship with other hormones, it is sometimes tested when a person is experiencing fertility issues. Testing can also be ordered by women who are not experiencing normal menstrual cycles or men who have signs of low testosterone.
Turnaround for this test is typically 8-12 business days.