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Tryptase : 34484
Test CodeTRYPTQ or 34484
CPT Codes
83520
Instructions
Samples should be obtained between 15 minutes and 3 hours after the event suspected of causing mast cell activation. When sample is drawn, separate serum from cells within 3 hours of collection. Serum separator tube. Also acceptable: plain red.
Transport Container
Centrifuge the serum separator and centrifuge within 3 hours of collection and transport; if a plain red top tube, centrifuge within 3 hours of collection and aliquot 1 ml serum (Min. 0.5 mL) into a standard transport tube. Refrigerate SST/serum immediately after separation..
Transport Temperature
Refrigerated.
Specimen Stability
After separation from cells: Ambient: Unacceptable; Refrigerated: 7 days; Frozen: 30 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolysis, postmortem sample.
Methodology
Fluorenzyme Immunoassay (FEIA)
Setup Schedule
Tuesday & Friday
Report Available
4-8 days (From receipt at performing laboratory)
Reference Range
<11 mcg/L
Clinical Significance
Tryptase concentrations are increased with immediate hypersensitivity (anaphylaxis), acute allergen challenge, and mastocytosis.
Performing Laboratory
Quest Diagnostics
