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Test ID TPNI Troponin I, Serum

Useful For

Exclusion diagnosis of acute myocardial infarction

Method Name

Chemiluminometric Immunoassay

Reporting Name

Troponin I, S

Specimen Type


Specimen Required

Patient Preparation: For 12 hours before specimen collection do not take multivitamins or dietary supplements containing biotin (vitamin B7), which is commonly found in hair, skin, and nail supplements and multivitamins.

Collection Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 2 mL

Collection Instructions:

1. Serum gel tubes should be centrifuged within 2 hours of collection.

2. Red-top tubes should be centrifuged and aliquoted within 2 hours of collection.

Specimen Minimum Volume

1 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Frozen (preferred) 30 days
  Ambient  24 hours
  Refrigerated  24 hours

Reference Values

≤0.04 ng/mL

Reference values have not been established for patients <17 years of age.

Day(s) Performed

Monday through Friday

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
TPNI Troponin I, S 89579-7


Result ID Test Result Name Result LOINC Value
TPNI Troponin I, S 89579-7

Test Classification

This test has been cleared, approved or is exempt by the U.S. 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.

Report Available

Same day/1 to 2 days

NY State Approved



If not ordering electronically, complete, print, and send a Cardiovascular Test Request Form (T724) with the specimen.