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Test Code
TRYPT
Test Name
Tryptase
CPT Codes
83520
Expected Turnaround Time
2 - 4 days
Clinical Utility

This test measures total tryptase (alpha and beta tryptase). Tryptase is the most abundant protein component of human mast cell secretory granules. Serum levels generally reflect the extent of mast cell activation either by IgE- or non-IgE-mediated mechanisms. Basophils also produce small amounts of tryptase.
Specimen and Container Info

Specimen Type: Serum

Alternate Specimen Type: Plasma

  

Collection Container: Gold Top, Serum Separator

Alternate Collection Container: Lavender Top (EDTA) or Green Top (Sodium or Lithium Heparin)

Desired Specimen Volume: 0.7 mL
Collection Instructions
  1. Collect a gold top, serum separator tube via venipuncture.
Processing and Submission Instructions
  1. Separate serum from cells.
  2. Transfer 0.7 mL of serum to a clear aliquot tube (screw cap).
Transport Instructions

Transport to the laboratory refrigerated.
Stability Requirements

Room Temperature

7 days

Refrigerated

14 days

Frozen

14 days

Freeze/Thaw Cycles

 Stable x3
Causes for Rejection
  • Grossly hemolyzed
  • Grossly lipemic
Methodology
Immunocap
Reference Intervals

See patient report.
Alternate Names
  • Mast Cell Tryptase
Reference Lab
Labcorp Of America Holdings
Testing Schedule
Varies
The American Medical Association (AMA) Current Procedural Terminology (CPT) codes published by HNL Lab Medicine are guidelines and are intended for informational purposes only. CPT coding is the exclusive responsibility of the billing entity. View the Terms.
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