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*Troponin I

Mnemonic

TROPONI

Synonym

Cardiac Marker - Cardiac Troponin I - TROP - TNI

Specimen Collection Requirements

Collect

Preferred: Plasma, one 3.0 mL mint green (lithium heparin, PST) top tube, also acceptable: Serum, one 5.0 mL gold (SST) or 7.0 mL red top tube

Supply Item Number – 147641, 101235 or 101192

Handling

Allow serum to clot completely at room temperature (minimum: SST - 30 minutes and red top tubes - 60 minutes). Centrifuges and separate serum or plasma from cells within 2 hours of collection. Use a transfer pipette to aliquot serum or plasma.

Preferred Volume

1.0 mL Serum/Plasma

Minimum Volume

0.5 mL Serum/Plasma (1.2 mL minimum whole blood draw)

Transport

Refrigerated (2-8°C)

Rejection Criteria

Grossly hemolyzed specimens

Stability

UNSPUN SAMPLES: Room Temperature (18-26°C):  2 hours

AFTER SEPARATION FROM CELLS: Room Temperature (18-26°C): 2 hours; Refrigerated (2-8°C): 24 hours; Frozen (≤ -20°C): 6 months.

Testing Information

Performed

7 days/week

Reported

24 hours

Method

Chemiluminescent Immunoassay

Reference Values

Reference Values

Critical Values

Comments

Serial testing is recommended.  Do not mix specimen types on the same patient when serial testing.

CPT Codes

84484

Last Updated: Thursday, February 11, 2021 10:56:20 PM


Client Services: 503-413-1234