A prolactin (PRL) test measures how much of a hormone called prolactin you have in your blood. The hormone is made in your pituitary gland, which is located just below your brain. When women are pregnant or have just given birth, their prolactin levels increase so they can make breast milk.

SPECIMEN: 2 mL (1 mL min.) serum from 1 SST. Collect specimen 4 hours after the patient has awakened.
STABILITY: Room: 8 hrs; Refrigerated: 48 hrs; Frozen: 4 weeks
REPORT: Daily
INSTRUCTIONS: No special preparation required
USAGE: This assay is a useful aid in the evaluation of Pituitary tumors, Amenorrhea, Galactorrhea, Infertility & Hypogonadism. It also helps in monitoring therapy in prolactin producing tumors.