Troponin
Also known as: Troponin I, Troponin T, hs-Troponin, Cardiac Troponin
Troponin is the heart's distress signal in your blood. In emergency rooms it is checked on arrival and again hours later — the trend tells doctors whether the heart was injured.
What this test means
Troponin is a protein found inside heart muscle cells. When heart muscle is injured — as in a heart attack — troponin leaks into the blood within hours.
Why it is done
It is done urgently for chest pain, breathlessness, or suspected heart attack, often repeated after a few hours to watch the trend.
Understanding your value
A raised troponin may suggest heart muscle injury, most importantly a heart attack, though kidney disease and severe illness can also raise it.
A normal troponin, especially when repeated over several hours, makes a heart attack unlikely.
High-sensitivity assays have very low cut-offs that vary by lab and sex. The rise-and-fall pattern over hours matters as much as the value.
Chest pain or pressure with sweating, breathlessness, or arm/jaw discomfort needs emergency care immediately — do not wait for test reports at home.
Frequently Asked Questions
Quick Facts
- TestTroponin
- Short formsTroponin I, Troponin T, hs-Troponin
- Sample typeBlood
- CategoryHeart