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.
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
72 hours removed from cells, clot or gel
8 hours on gel
Sample Analyzed: Plasma or serum
Testing Volume: 0.5 mL
Pediatric Testing Volume: 0.2 mL
Centrifuge. Transfer cell-free plasma/serum to plastic vial. Refrigerate.
Transport specimen to the laboratory. Transport with coolant pack if coming from clinic location.
|0 days and up:||0.00 - 0.03 ng/mL|
|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
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.