PROLACTIN - (P)
Test Code: PL
Test Indications: This test is used in the evaluation of pituitary tumors, amenorrhea, galactorrhea, infertility and hypogonadism. It is also used to monitor therapy of prolactin-producing adenomas. Prolactin is secreted by the anterior pituitary under the control of the hypothalamus. Its primary function is to promote breast development in preparation for lactation. It also affects gonadal function in both females and males via hypothalamic-pituitary control of gonadotropin secretion.
Patient Preparation Instructions: Multivitamins (45–125 µg biotin) or biotin-only supplements up to 1 mg per day do not interfere with this test. Samples should not be taken from patients receiving therapy with high biotin doses (i.e. >5 mg/day) until at least 8 hours after the last dose.
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Plasma: 2.0 mL
Stability 14 days refrigerated, 6 months frozen
Serum: 2.0 mL
Samples must be transferred to an aliquot tube and stored frozen if analysis will not be complete within 48 hours (#110-10-05 Serum / Plasma Separation Procedure & Transport)