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Epic Code LAB1230757 Tryptase

Test Name Alias

Tryptase | Anti-tryptase

Interface Order Alias


Clinical Information

Useful For

  • Assessing mast cell activation, which may occur as a result of anaphylaxis or allergen challenge
  • Assessing patients with systemic mastocytosis or mast cell activation syndrome

Collection Instructions

Specimen Collection: Blood

Container(s): Gold Top (Serum Separator-SST Gel)

Preferred Volume to Collect: 5.0 mL

Minimum Volume to Collect: 1.0 mL

Neonate Volume to Collect: 1.0 mL

Capillary collect ok: No

Microtainer acceptable: Yes

Collection Instructions:

  • Gently invert gold tube(s) 8 - 10 times to mix clot activator with blood.
  • Specimen should be processed within 2 hours – See Processing Instructions.


Processing Instructions (Laboratory, Outpatient or Off-site collection)

Processed Specimen: Serum

Centrifuge/Spin: Yes

Aliquot: No

Minimum processed specimen: 0.5 mL Serum

Processing Instructions:

  • Allow blood to clot for 30 minutes in a vertical position and centrifuge within 2 hours.

Transport Temperature: Refrigerated (2-8oC) or Ambient

Rejection Criteria

  • Hemolysis, Lipemia or Icteric specimens are OK to process.

Specimen Stability

Ambient: 2 days

Refrigerate: 7 days

Frozen: 30 days

Laboratory Retention: 30 days

Test Frequency

Test run on Fridays, usual turn around time 5 - 7 days

Reference Range

<11.0 mcg/L

Performing Department


Performing Department Laboratory Location

Corewell Health Reference Laboratory, Grand Rapids, MI


Fluorescence Enzyme Immunoassay (FEIA)



CDM Code


Epic Test ID




Reviewed Date