Luteinizing hormone is a hormone produced by gonadotropic cells in the anterior pituitary gland. The production of LH is regulated by gonadotropin-releasing hormone from the hypothalamus. In females, an acute rise of LH triggers ovulation and development of the corpus luteum.

SPECIMEN: 2 mL (1 mL min.) serum from 1 SST. Ship refrigerated or frozen. Specify age and sex on test request form.
STABILITY: Room: 8 hrs; Refrigerated: 48 hrs; Frozen: 4 weeks
REPORT: Daily
INSTRUCTIONS: In females, preferred sampling time is Day 2 / Day 3 of the menstrual cycle. Specify day of the menstrual cycle.
USAGE: This assay is used for evaluating patients with suspected Hypogonadism, predicting ovulation, evaluating Infertility and diagnosing Pituitary disorders. This assay is also an adjunct in the evaluation of menstrual irregularities. In both males & females Primary hypogonadism results in elevated levels of basal LH & FSH. LH is decreased in Primary ovarian hyperfunction in females & Primary hypergonadism in males.