Tryptase

Test Code

34484

CPT Codes
83520

Preferred Specimen

1 mL frozen serum, received spun

Minimum Volume

0.5 mL

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.

Transport Container

Transport tube

Transport Temperature

Frozen

Specimen Stability

Room temperature: Unacceptable
Refrigerated: 7 days
Frozen: 30 days

Methodology
Immunoassay (IA)

Setup Schedule

Set up: Mon-Sat; Report available: 1-2 days

Reference Range

<11.0 mcg/L

Clinical Significance

Tryptase concentrations are increased with immediate hypersensitivity (anaphylaxis), acute allergen challenge, and mastocytosis.

Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.