Feb 8, 2018




Clinical Hub,Tools & Resources,UWHC Lab Test Directory,Chemistry

Troponin I

Troponin I (GM2447) Chemistry Lab Test

Name: Troponin I

Test Name: Troponin I

Health Link Test Code: GM2447

LIS Test Code: TROP

CPT Code(s): 84484

Methodology: Chemiluminescent Immunoassay

Days Performed: Daily, 24 hours.

In-Lab Turnaround Time: 4 hours.

Stat In-Lab Turnaround Time: 1 hour.

Specimen: Blood

Collection Container: Green cap with yellow ring (PST)

Also Acceptable: Green top, Red cap with yellow ring (SST), Red top

Collection Volume: 1 mL

Pediatric Collection Volume: 0.5 mL

Stability Ambient:

8 hours

Stability Refridgerated:

72 hours removed from cells, clot or gel

8 hours on gel

Stability Frozen:

1 month

Sample Analyzed: Plasma or serum

Testing Volume: 0.5 mL

Pediatric Testing Volume: 0.2 mL

Specimen Processing:

Centrifuge. Transfer cell-free plasma/serum to plastic vial. Refrigerate.

Specimen Transport:

Transport specimen to the laboratory. Transport with coolant pack if coming from clinic location.


0 days and up: 0.00 - 0.03 ng/mL
Interpretive Guidelines 
0.00 - 0.03 ng/mL Negative-repeat testing in two hours if clinically indicated
0.04 and above:

Suspicious for myocardial injury. Serial measurements may be necessary to confirm

or exclude the diagnosis of acute coronary syndrome. Repeat testing in two hours if indicated.

Interpretation Type: Reference Interval

Critical Calls: yes

Additional Information:

Heterophilic antibodies in human serum can react with reagent immunoglobulins, interfering with in vitro immunoassays.  The presence of heterophilic antibodies in a patient specimen may cause anomalous values to be observed. Additional information may be required for diagnosis.

Specimens from patients who have received preparations of mouse monoclonal antibodies for diagnosis or therapy may contain human anti-mouse antibodies (HAMA). Such specimens may show either falsely elevated or depressed values when tested with assay kits that employ mouse monoclonal antibodies. Additional clinical or diagnostic information may be required to determine patient status.