Tryptase

Alphabetical Test listing

Tryptase-13322

Test name:

Tryptase

Test number:

13322

Excellian order number:

LAB13322

Abbreviation:

TRY

Alternate names:

Mast cell tryptase
Total tryptase

Useful for:

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 type:

Serum

Collection container:

Gold serum separator (SST) tube

Volume:

0.7 mL

Minimum volume:

0.5 mL
Submission of the minimim volume does not allow for repeat testing

Collection instructions:

Immediatley following collection, mix sample by gently inverting 5 times

Processing instructions:

Allow sample to clot for a minimum of 30 minutes
Spin within two (2) hours of sample collection

Transport container:

Gold serum separator (SST) tube

Alternate specimen type:

EDTA plasma
Heparin plasma

Alternate collection container:

Lavender (EDTA), 4mL

Dk green heparin (Li or Na), no gel

Alternate collection instructions:

Immediatley following collection, mix sample thoroughly by gentle inverting 8 - 10 times, to prevent clotting

Alternate processing instructions:

Spin within two (2) hours of sample collection
Transfer plasma to a Transfer vial/tube with cap - 12mL (LabCorp), labelled as the appropriate plasma type

Alternate transport container:

Transfer vial/tube with cap - 12mL (LabCorp)

Transport and stability:

Refrigerated (preferred) - 14 days

Ambient - 7 days

Frozen - 14 days

Freeze/thaw cycles - Stable x3

Reason for rejection:

Gross hemolysis
Gross lipemia

Performing lab:

LabCorp Burlington (004280): R-LC

Days set up:

Mo, We, Fr

TAT:

5 days

Method:

ImmunoCAP

Reference ranges:

2.2 - 13.2 μg/L

CPT codes:

83520

LOINC code:

Result 21582-2

Date created:

04/11/2019

Revised date:

03/16/2022

Review date:

12/22/2023