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Troponin T (TnT) Unit Converter
Cardiac Troponin T (cTnT) is a regulatory protein found in the heart muscle. Like Troponin I, it is a highly specific marker for myocardial injury. The high-sensitivity cardiac Troponin T (hs-cTnT) assay is widely used globally for the early diagnosis of acute coronary syndromes.
Older assays (Conventional) typically reported results in **ng/mL**, whereas modern High-Sensitivity assays report in whole numbers using **ng/L**. This converter allows for seamless standardization between these reporting formats.
Conventional Units
Older AssaysNanograms per milliliter. Typical 99th % ≈ 0.01.
High-Sensitivity
Nanograms per liter. Typical 99th % ≈ 14 (varies by sex).
Clinical Context
Reference Values (Assay Dependent):
• Conventional (4th Gen): 99th percentile cutoff ≈ 0.01 ng/mL.
• High-Sensitivity (hs-cTnT): 99th percentile is approx 14 ng/L (overall). Sex-specific cutoffs are often used (e.g., ≈10 ng/L for females, ≈15 ng/L for males).
Interpretation:
A rise and/or fall of cTn values with at least one value above the 99th percentile signifies myocardial injury. In the context of ischemia, this defines Acute Myocardial Infarction.
Conversion Logic:
1 ng/mL = 1,000 ng/L (pg/mL).
1 ng/L = 0.001 ng/mL.
Clinical References
How to Use This Converter
Follow these steps to normalize Troponin T values.
Enter Values
Input your laboratory result into the corresponding unit field. Use ng/mL for older/standard assays or ng/L for high-sensitivity results.
Automatic Conversion
The calculator automatically multiplies or divides by 1000 to switch between units.
Reset
Use the Clear button to reset all fields.
Frequently Asked Questions
No. Troponin T and Troponin I are distinct proteins. They are not interchangeable and have different reference ranges, although both indicate heart muscle damage.
hs-cTnT detects lower levels of troponin earlier, allowing for a faster rule-out or diagnosis of heart attacks (often within 1-2 hours).