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HelpOrder Code TROP HS Troponin I High Sensitivity
Additional Codes
Epic Order ID LAB3317IA
Collection tube
It is not recommended to switch from plasma to serum or serum to plasma mid-series. All series collections should remain the same specimen type
Green Li PST
SST
Specimen Type
Plasma
Serum
Minimum Volume
0.1 ml
Stability
8 hours at room temperature
24 hours at 2-8°C
40 days at -20°C (Freeze sample only once, do not refreeze)
Reference Range
Cedar Falls / Oelwein
Male: 4 - 76 pg/mL
Female: 4 - 51 pg/mL
Unknown: 4 - 60 pg/mL
Waterloo
Male: 3 - 53 pg/mL
Female: 3 - 34 pg/mL
Unknown: 4 - 45 pg/mL
Critical Values
Cedar Falls / Oelwein
Male: ≥ 76 pg/mL
Female: ≥ 51 pg/mL
Unknown: ≥ 60 pg/mL
Waterloo
Male: ≥ 53 pg/mL
Female: ≥ 34 pg/mL
Unknown: ≥ 45 pg/mL
Rejection Criteria
Anticoagulants other than lithium heparin
Non-similar serial collection tubes
Clinical Significance
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.