A selective nerve root block is an injection of a local anesthetic along a specific nerve root. Along the spine, there are several âholesâ or âforaminaâ through which nerve roots emerge. If these foramina are partially closed from bulging disks, bone spurs, misalignment of vertebrae, etc., the nerve root can also be pinched.
Luteinizing hormone (LH, also known as lutropin and sometimes lutrophin) is a hormone produced by gonadotropic cells in the anterior pituitary gland.rom Wikipedia, the free encyclopedia. Luteinizing hormone (LH, also known as lutropin and sometimes lutrophin) is a hormone produced by gonadotropic cells in the anterior pituitary gland. In females, an acute rise of LH ( LH surge ) triggers ovulation and development of the corpus luteum.
Test Overview. A luteinizing hormone test measures the amount of luteinizing hormone (LH) in a sample of blood or urine. LH is produced by the pituitary gland. 1  In women, LH helps regulate the menstrual cycle and egg production (ovulation). 2  The level of LH in a woman's body varies with the phase of the menstrual cycle.est Overview. A luteinizing hormone test measures the amount of luteinizing hormone (LH) in a sample of blood or urine. LH is produced by the pituitary gland. 1  In women, LH helps regulate the menstrual cycle and egg production (ovulation). 2  The level of LH in a woman's body varies with the phase of the menstrual cycle.