What Is Troponin in a Blood Test?
Troponin is a protein released when heart muscle cells are damaged.
Normal Range
- Below 0.04 ng/mL
- Any elevation above 99th percentile is concerning
Elevated Troponin Causes
- Heart attack — primary use
- Heart failure
- Myocarditis
- Pulmonary embolism
- Chronic kidney disease
- Intense exercise (mild elevation)
How Used
- Emergency chest pain evaluation
- Serial measurements at 0, 3, 6 hours
- Rising pattern = ongoing damage
Source: NLM MedlinePlus, American Association for Clinical Chemistry.
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