Troponin T

Test Code

CPT Codes

Preferred Specimen
1 mL frozen serum

Patient Preparation
Dietary supplements containing biotin may interfere in assays and may skew results to be either falsely high or falsely low. For patients receiving the recommended daily doses of biotin, draw samples at least 8 hours following the last biotin supplementation. For patients on mega-doses of biotin supplements, draw samples at least 72 hours following the last biotin supplementation.

Minimum Volume
0.5 mL

Other Acceptable Specimens
Plasma collected in a sodium heparin (green-top) tube

Remove serum from cells and freeze as soon as possible. Minimize exposure to room temperature. Avoid repeated freeze/thaw cycles.

Transport Container
Plastic screw-cap vial

Transport Temperature

Specimen Stability
Room temperature: Unacceptable
Refrigerated: 24 hours
Frozen: 1 year

Immunoassay (IA)

Setup Schedule
Set up: Tues-Sat a.m.; Report available: 4-7 days

Reference Range
<0.01 ng/mL

Clinical Significance
Troponin T (TnT) is an independent prognostic marker which can predict the near-, mid-, or even long-term outcome of patients with acute coronary syndrome (ACS)

Performing Laboratory
Quest Diagnostics Nichols Institute-San Juan Capistrano, CA
33608 Ortega Highway
San Juan Capistrano, CA 92675-2042

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.