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Troponin-I
MessageTest Code
Alias/See Also
CPT Codes
84484
Includes
Transport Container
Reference Range
Clinical Significance
Troponin tests are primarily ordered for people who have chest pain to see if they have had a heart attack or other damage to their heart. Either a troponin I or a troponin T test can be performed; usually a laboratory will offer one test or the other. Troponins are sometimes ordered along with other cardiac biomarkers, such as CKMB or myoglobin. However, troponins are the preferred tests for a suspected heart attack because they are more specific for heart injury than other tests (which may become positive in skeletal muscle injury) and remain elevated for a longer period of time.
The troponin test is used to help diagnose a heart attack, to detect and evaluate mild to severe heart injury, and to distinguish chest pain that may be due to other causes. In patients who experience heart-related chest pain, discomfort, or other symptoms and do not seek medical attention for a day or more, the troponin test will still be positive if the symptoms are due to heart damage.