Tryptase
Test Mnemonic
TRYPT
CPT Codes
- 83520 - QTY (1)
LOINC ®
21582-2
Aliases
- Total Tryptase
Performing Laboratory
Cleveland Clinic Laboratories
FDA Category
In Vitro Diagnostic
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.5 mL | Serum | SST (Gold) | Refrigerated |
Alternate Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.5 mL | Plasma | Lithium heparin PST (Lt. Green) | Refrigerated | ||
| 0.5 mL | Plasma | EDTA (Lavender) | Refrigerated |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.3 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Ambient | 48 hours |
| Refrigerated | 30 days |
| Frozen | 9 months |
Days Performed
Tue, Fri
Turnaround Time
1 - 5 days
Methodology
| Name | Description |
|---|---|
| Fluorescent Enzyme Immunoassay (FEIA) |
Reference Range
| Tryptase | |||||
|---|---|---|---|---|---|
| Sex | Age From | Age To | Type | Range | Range Unit |
| Normal | <8.4 | ug/L |
Clinical Info
Useful for assessing patients with systemic mastocytosis or mast cell activation syndrome. Tryptase may be undetectable or not elevated in some patients with acute mast cell activation if specimens are obtained > 12 hours after an anaphylactic episode.