A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #

Tryptase

Test Code
TRPAS


CPT Codes
<p>83520</p>

Preferred Specimen

Specimen Type: Serum

Collection Container/Type

Preferred: Serum gel

Acceptable: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 1 mL

Collection Instructions: 

  1. Samples should be obtained between 15 minutes and 3 hours after the event suspected of causing mast cell activation.
  2. When sample is drawn, separate serum from cells within 3 hours of collection.


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
Plastic screw-cap vial


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: Next day


Report Available

Next day



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


Last Updated: February 17, 2023


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.