Tryptase
Also known as: TRYPT
Use
Measure total tryptase to confirm mast cell activation in diseases such as mastocytosis, anaphylaxis, urticaria, and asthma. Useful in the prognosis of systemic mastocytosis. This test is not generally used acutely except where diagnosis is unclear.
Special Instructions
Samples should preferably be collected between 15 minutes and three hours after the event suspected to have caused mast cell activation.
Limitations
This test measures total tryptase and does not distinguish between the alpha and beta protein types.
FDA ApprovedNew York Approved
Methodology
Immunoassay (Fluorescent Enzyme Immunoassay)
Biomarkers
LOINC Codes
- 21582-2
Result Turnaround Time
1-2 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
1 mL
Minimum Volume
0.5 mL
Container
ARUP Standard Transport Tube
Collection Instructions
Allow serum to clot completely at room temperature. Separate serum from cells ASAP or within 2 hours of collection. Transfer serum to transport tube.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 48 hours |
| Refrigerated | 72 hours |
| Frozen | 1 month |