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Test Code TRYPT Tryptase, Serum

Additional Codes

Epic Ordering Code LAB2410
NBS code LBC13389
Service code 36652

Reporting Name

Tryptase, S

Specimen Type

Serum


Specimen Required


Supplies: Sarstedt Aliquot Tube, 5 mL (T914)

Collection Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 0.5 mL

Collection Instructions: Centrifuge and aliquot serum into a plastic vial

Additional Information: Tryptase degenerates very quickly when left in the presence of red blood cells.


National University Hospital-Singapore Note:

NUH Outreach Laboratories:
Specimen Requirements
Submit only one of the following:
Preferred: Yellow Top
Acceptable: Red Top
Processing Requirements
Centrifuge and aliquot serum into a Mayo plastic tube.
Specimen ype: Serum
Volume: 0.5 mL
Storage/transport requirements: Refrigerated

Forms

If not ordering electronically, complete, print, and send a General Request (T239) with the specimen.

Specimen Minimum Volume

0.2 mL

Specimen Stability Information

Specimen Type Temperature Time
Serum Frozen (preferred) 14 days
  Refrigerated  7 days

Reject Due To

Gross hemolysis OK
Gross lipemia OK
Gross icterus OK

Method Name

Fluorescence Enzyme Immunoassay (FEIA)

Testing Algorithm

For more information see Mast Cell Disorder: Diagnostic Algorithm, Bone Marrow.

Day(s) Performed

Monday through Friday

Report Available

2 to 5 days
National University Hospital-Singapore Note:

Please note that this is a referral test requiring transport to the external testing facility and an additional 3-5 days is required.

Reference Values

<11.5 ng/mL

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Useful For

Evaluation of individuals with suspected mast cell activation, which may occur as a result of anaphylaxis or allergen challenge

 

Evaluation of patients with suspected mast cell activation syndrome

 

Evaluation of patients with suspected cutaneous or systemic mastocytosis

LOINC Code Information

Test ID Test Order Name Order LOINC Value
TRYPT Tryptase, S 21582-2

 

Result ID Test Result Name Result LOINC Value
TRYPT Tryptase, S 21582-2

CPT Code Information

83520

Secondary ID

81608

Test Classification

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.
National University Hospital-Singapore Additional Information:

Last updated 07/08/2026