Doctor insights on:
How Long Does The Troponin Testing Take
Troponin is an enzyme found in heart muscle, which is involved in the muscle fiber's ability to contract. It is extremely specific to heart muscle, and hence if levels are elevated in the blood, it points very confidently toward heart muscle damage as a cause of patient's symptoms. In fact, it is the test that is used to definitively ...Read more
Damaged heart tissue: Cardiac markers including ckmb and troponins measure damage to the heart muscle which occurs in a heart attack - the damaged/dying muscle will leak these into the serum which can be measured as blood tests. They start off "negative" - in the reference range - and then 4-6 hrs after the start of the heart attack they begin to rise - will eventually peak and over several days return to normal. ...Read more
Cycling: Not sure what you mean or where you got that terminology. We often do serial troponin exams over a time period to see whether the level is rising/falling; one might call that cycling. Physiologically there is a cycle of troponin binding during heart contraction so not sure what you mean. ...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
Enzyme in heart: Troponin is an enzyme found in heart muscle, which is involved in the muscle fiber's ability to contract. It is extremely specific to heart muscle, and hence if levels are elevated in the blood, it points very confidently toward heart muscle damage as a cause of patient's symptoms. In fact, it is the test that is used to definitively diagnose a heart attack. ...Read more
depends on the lab: It depends on the lab but in every lab i'm familiar with, it would be very, very high. ...Read more
Yes: If this is a sensitive troponin i or t then any result above 0.04 or 0.01 respectively should be viewed as indicative of myocardial cell leak or death. Can happen in mi and other states (see tags). Certainly a level of 5 in one of these modern (post 2009) assays should be viewed as positive - reflecting potential heart cell loss. If confirmed by ECG and/or echo, coronary angio should be considered. ...Read more
If your troponin is over .5 it is considered elevated. But if i were to have it at 16 what would that mean?
Pattern: It's not just the absolute number, it's the pattern and setting. A rise and fall in the setting of chest pain or other objective measures of abn. Cardiac function is indicative of acute myocardial infarction (heart attack) but a permanently elevated troponin may be normal for you (extremely rare). ...Read more
Heart Muscle Damage: Troponin i and t are biomarkers that are very sensitive and specific for heart muscle damage (heart attack). When these are elevated, they usually (but not always) indicated a heart attack. There are some exceptions, so you should speak with a physician to clarify this issue. ...Read more
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