What This Value Measures
Troponin is a protein from the heart muscle that enters the bloodstream when the heart is damaged. It is an important value when a heart attack is suspected.
Elevated Value
An elevated value may indicate damage to the heart muscle, such as in a heart attack, but also with other cardiac stress.
Low Value
A single low value does not rule out a heart attack in every situation — especially not shortly after symptoms begin, because troponin only rises with a delay. It is always assessed together with symptoms, the ECG and, usually, repeated measurements.
Note: There is no universally valid threshold: each test method has its own decision values, sometimes separate for women and men. The high-sensitivity hs-cTnT test commonly used in Swiss hospitals, for example, uses a value of around 14 ng/l. In the case of acute chest pain, the rule is: do not wait for a lab value — call 144.
Reference ranges are typical guide values for adults and vary depending on the laboratory, measurement method, age and sex — always compare with the range stated on your own report. A value outside the range does not automatically mean an illness, and a value within the range does not rule one out. The trend and overall picture are usually more informative than a single value. The doctor's assessment is always decisive.