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HelpTest Code TRYPT Tryptase, Serum
Additional Codes
Torrance Memorial Laboratories Test Code: 155996136
Reporting Name
Tryptase, SUseful For
Evaluation of individuals with suspected mast cell activation, which may occur as a result of anaphylaxis or allergen challenge
Evaluation of patients with suspected cutaneous or systemic mastocytosis
Testing Algorithm
For more information, see Mast Cell Disorder: Diagnostic Algorithm, Bone Marrow
Method Name
Fluorescence Enzyme Immunoassay (FEIA)
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
SerumSpecimen Required
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 0.5 mL
Collection Instructions: Centrifuge and aliquot serum into plastic vial
Additional Information: Tryptase degenerates very quickly when left in the presence of red blood cells.
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum | Frozen (preferred) | 14 days | |
| Refrigerated | 7 days |
Reject Due To
| Gross hemolysis | OK |
| Gross lipemia | OK |
| Gross icterus | OK |
Special Instructions
Reference Values
<11.5 ng/mL
Day(s) Performed
Monday through Friday
Report Available
2 to 5 daysCPT Code Information
83520
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| TRYPT | Tryptase, S | 21582-2 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| TRYPT | Tryptase, S | 21582-2 |
Test Classification
This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.Forms
If not ordering electronically, complete, print, and send a General Request (T239) with the specimen.