How is troponin a sign of heart attack?

Muscle damage. When heart muscle is injured troponin leaks into the blood where it can be measured. Elevated levels typically indicate some damage to the heart. There can be false positive readings especially in patients with renal failure.

Related Questions

How high does the troponin result be, to signal a heart attack?

It depends. In the proper setting with chest pain & abnormal electrocardiogram an elevated troponin (highly sensitive version) can indicate heart damage. However there are other possible explanations for an elevated level. These include congestive heart failure, pulmonary embolism (blood clot in the lungs) or kidney failure. The pattern of the elevation over time is also useful. Read more...
This can vary. Both troponin i and troponin t assays are used to test the blood for evidence of damage to the heart muscle. The normal range for troponin i is higher than the normal range for troponin t. In a given laboratory, the normal ranges may differ from that in another laboratory, depending upon the assay system used. Each laboratory generally publishes normal ranges for the particular assay it uses. Read more...

Is one troponin t test within 7 hours of symptoms enough to rule out heart attack. It as neg but I'm still having symptoms. I read a series sb done.

NoEasyAnswerToThis. There are no hard & fast rules.Each case must be evaluated on its own.Yes,in certain circumstances one troponin 7 hours after onset of symptoms can rule out some heart damage;but not necessarily a'heart attack,' per se.You can have a bad headache without having a stroke,right?Also depends on your personal story,family history,lifestyle,diet,activities,stress factors, smoking, drugs.Find a good doc. Read more...

Went to er for heart attack symptoms. Did a troponin t test. It was normal. They didn't do a series of troponin tests. Safe to say I didn't have a mi?

MI. ER evaluation of 'MI' symptoms includes clinical history, exam and appropriate lab tests. If there was low probability of MI given the situation, multiple troponins would not necessarily be needed. Read more...