24 Hour Timed Urine, Histamine

Test Code
TUHIST


Quest Code
4946


Alias/See Also
Histamine, 24-Hour Urine


CPT Codes
83088

Includes
CPT code 81050 may be added at an additional charge for volume measurement


Preferred Specimen
4 mL urine from a 24-hour urine containing 10 mL 6N HCL collected in a leak-proof container


Patient Preparation
Avoid direct sunlight. Patient should refrain from taking allergy causing drugs, antihistamines, oral corticosteroids, and substances which block H2 receptors for at least 24 hours prior to specimen collection.

Minimum Volume
2 mL


Other Acceptable Specimens
Non-preservative 24-hour urine collected in a leak-proof container


Transport Container
Frozen


Transport Temperature
Refrigerated (cold packs)


Specimen Stability
Room temperature: 48 hours
Refrigerated: 14 days
Frozen: 14 days


Methodology
Immunoassay (IA)

FDA Status
LDT

Setup Schedule
A.M. Sets up 2 days a week.


Reference Range
0.006-0.131 mg/24 h


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.


Performing Laboratory
Quest Diagnostics Nichols Institute
33608 Ortega Highway
San Juan Capistrano, CA 92675-2042



The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.