Avoid taking allergy causing drugs, antihistamines, oral corticosteroids, and substances which block H2 receptors for at least 24 hours prior to specimen collection. Avoid direct sunlight during the collection.
1. Collect urine for 24 hours, either with 10 mL 6N HCL preservative (preferred), or with no preservative.
2. Avoid direct sunlight during the 24 Hour collection.
3. Send specimen refrigerated in the plastic, 10-mL urine tube
4. Collection volume and duration are required
This test was performed using a kit that has not been approved or cleared by the FDA. The analytical performance characteristics of this test have been determined by Quest Diagnostics Nichols Institute, San Juan Capistrano. This test should not be used for diagnosis without confirmation by other medically established means.
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.