Avoid direct sunlight. Avoid taking allergy causing drugs, antihistamines, oral corticosteroids, and substances which block H2 receptors for at least 24 hours before collection.
1.0 mL Plasma from a Lavender Top Tube - EDTA in a Plastic Vial
7 days Frozen
Avoid Hemolysis
Centrifuge & freeze plasma immediately.
0.2 mL
< or = 1.8 ng/mL
Results 2.2 ng/mL or less may include individuals with mild elevation of histamine due to limits of sensitivity of assay.
1 to 5 days
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