Troponin T (Highly Sensitive)
Also known as: Cardiac Troponin T
Use
Immunoassay for the in vitro quantitative determination of cardiac troponin T (cTnT) in lithium heparin plasma. The immunoassay is intended to aid in the diagnosis of myocardial infarction.
Special Instructions
This test may interfere with samples from individuals consuming high doses of biotin. It is advised to ask patients about biotin supplementation and recommend stopping its consumption at least 72 hours prior to sample collection. Additionally, samples showing hemolysis can affect results.
Limitations
While highly specific to cardiac tissue, elevated troponin T levels can be found in conditions other than myocardial infarction (MI), including myocarditis, heart failure, and pulmonary embolism. Serial measurement is recommended to differentiate between acute and chronic elevations. Hemolysis and high biotin doses may interfere with assay results.
Methodology
Immunoassay (ECLIA)
Biomarkers
LOINC Codes
- 89576-3
- 67151-1
Result Turnaround Time
1-3 days
Related Documents
For more information, please review the documents below
Specimen
Plasma
Volume
1 mL
Minimum Volume
0.8 mL
Container
Green top (lithium-heparin) tube, can contain separating gel
Collection Instructions
Centrifuge and transfer separated heparin plasma to a plastic transport tube and label as Li-Heparin plasma. Use separate frozen specimens if requesting multiple tests.
Patient Preparation
Stop biotin consumption at least 72 hours prior to sample collection.
Storage Instructions
Freeze.
Causes for Rejection
Sample other than lithium heparin plasma
Stability Requirements
| Temperature | Period |
|---|---|
| Refrigerated | 24 hours |
| Frozen | 12 months |