Troponin Test
A blood test that detects heart muscle damage, used to diagnose a heart attack.
Quick Summary
To check for a heart attack in people with chest pain.
Troponin I or T, often measured more than once.
No preparation; done urgently in emergency care.
Overview
Troponin is released when heart muscle is damaged. High-sensitivity tests can detect small changes.
A rising level over a few hours supports a heart attack diagnosis.
What It Measures
High-sensitivity troponin
Heart muscle damage.
How It's Performed
- 01
Preparation
Usually no special preparation. Tell the staff about medicines you take.
- 02
Blood sample
A small amount of blood is taken from a vein in your arm with a thin needle.
- 03
Afterwards
Press on the spot for a minute. A small bruise is common; you can go back to normal activities.
Interpreting Results & Next Steps
Discuss with Doctor
Reference cut-offs depend on the specific test used by the lab. Normal ranges differ between laboratories, ages and sexes; always use the range printed on your report and ask your doctor what your results mean.
If values are High:
A raised or rising troponin suggests heart muscle damage, most often a heart attack, but also myocarditis, heart failure or kidney disease.
Sources and further reading
Last updated 21 October 2026. For more detail, see these trusted health organisations.
- Troponin Test(opens in a new tab) · MedlinePlus, US National Library of Medicine