Specimen Collection Manual and Test Catalog
HISTAMINE, PLASMA
Geisinger Epic Procedure Code: LAB2462 Geisinger Epic ID: 45090Plasma
1 mL plasma, minimum 0.5 mL, collected in EDTA tube
See Specimen Processing Instructions
Avoid taking allergy causing drugs, antihistamines, oral corticosteroids, and substances which block H2 receptors for at least 24 hours before collection.
Centrifuge immediately and freeze plasma in a plastic vial.
Frozen.
Room temperature: 24 hours. Refrigerated: 24 hours. Frozen: 7 days.
Hemolysis. Lipemia. Specimens received refrigerated or at room temperature.
Histamine, Plasma < or = 1.8 ng/mL
The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.
Quest test code 36586, HIST
Clinical Significance: Histamine is a mediator of the allergic response. Histamine release causes itching, flushing, hives, vomiting, syncope, and even shock. In addition, some patients with gastric carcinoids may exhibit high concentrations of histamine.