Specimen: 2 mL (1 mL min.) serum from 1 SST. Collect specimen 4 hours after the patient has awakened. Overnight fasting is preferred. Ship refrigerated or frozen. Stability (Room): 8 hrs Stability (Refrigerated): 48 hrs Stability (Frozen): 4 weeks Method: Chemiluminescent Immunoassay Comment: Prolactin is secreted episodically. Pooling equal volume of serum from 3 samples...