Troponins I and T
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Cardiac troponin, cardiac troponin I (cTnI), cardiac troponin T (cTnT).
To assist in evaluating myocardial muscle damage related to disorders such as myocardial infarction.
Serum collected in a gold-, red-, or red/gray-top tube. Plasma collected in a green-top (heparin) tube is also acceptable. Serial sampling is highly recommended. Care must be taken to use the same type of collection container if serial measurements are to be taken.
(Method: Enzyme immunoassay)
|Troponin I||Conventional Units||SI Units (Conventional Units × 1)|
|0–30 d||Less than 4.8 ng/mL||Less than 4.8 mcg/L|
|1–3 mo||Less than 0.4 ng/mL||Less than 0.4 mcg/L|
|3–6 mo||Less than 0.3 ng/mL||Less than 0.3 mcg/L|
|7–12 mo||Less than 0.2 ng/mL||Less than 0.2 mcg/L|
|1–18 yr||Less than 0.1 ng/mL||Less than 0.1 mcg/L|
|Adult||Less than 0.05 ng/mL||Less than 0.05 mcg/L|
|Troponin T||Less than 0.2 ng/mL||Less than 0.2 mcg/L|
|Normal values can vary significantly due to differences in test kit reagents and instrumentation. The testing laboratory should be consulted for comparison of results to the corresponding reference range.|