CPT/HCPCS
N/A
Order Code
CH922
Turnaround Time
N/A
Specimen Requirements
Specimen Source
Lithium Heparin Plasma, K2-EDTA Plasma
Transport Container
(Specimen Container)
(Specimen Container)
Green Top (Lithium Heparin), Lavender (K2-EDTA)
Preferred Specimens
Green Top (Lithium Heparin)
Minimum Volume (uL)
1 mL
Collection Instructions
(Transport Temperature)
(Transport Temperature)
Transport Room Temperature
Specimen Stability
| Temperature | Period |
|---|---|
| Room temperature | 8 hours |
| Refrigerated | Unacceptable |
| Frozen | 40 days |
Special Instructions
Centrifuge tube and separate plasma into a plastic specimen transport tube. Freeze as soon as possible (within 8 hours).
Test Details
Methodology
Chemiluminescent Microparticle Immunoassay (CMIA)
Clinical Significance
Troponin I, High Sensitivity – Troponin I is part of a protein complex which regulates the contraction of striated muscle. In acute coronary syndromes (ACS), it can be detected in blood at 4-8 hours following the onset of chest pain, reaches a peak concentration at 12-16 hours, and remains elevated for 5-9 days. Troponin I has been used as a reliable marker in the diagnosis of perioperative myocardial infarction in patients undergoing cardiac surgery.
Reference Ranges
Male (Ages 21 – 73)
≤35 ng/L
Female (Ages 21 – 75)
≤14 ng/L
