| (Biochemistry) |
|
| ||||||||||||
| Investigation | : | Troponin T | ||||||||||
| Specimen type | : | Serum | ||||||||||
| Spec container | : | Serum Gel | ||||||||||
| Volume required | : | 5 ml | ||||||||||
| Reference range | : | <14 ng/l | ||||||||||
| Turnaround | : | <24 hours | ||||||||||
Diagnostic Criteria
The universal definition of myocardial infarction includes the "detection of a rise and/or fall of cardiac biomarker values [preferably cardiac troponin (cTn)] with at least one value above the 99th percentile of the reference range". ¹
Sample Timing
High sensitivity Troponin T assays allow for the early diagnosis of myocardial ischaemia. ² Therefore sampling is now recommended at presentation and if required 3 hours later.
Interpretation
Please interpret diagnostic Troponin T requests in line with a full clinical history, ECG changes and the Trust’s Troponin T testing policy.
Please see Liverpool Acute Chest Pain Pathway and Proforma for more details.
References
1) Third universal definition of myocardial infarction. European Heart Journal (2012) 33, 2551- 2567
2) Myocardial infarction (acute): Early rule out using high-sensitivity troponin tests (Elecsys Troponin T high-sensitive, ARCHITECT STAT High Sensitive Troponin-I and AccuTnI+3 assays). NICE Diagnostics Guidance. October 2014. (DG15) Link.
Back
Laboratory Services Home Page