Can anyone tell me about Troponin

Triponin checks your heart activity 7 is a normal range. When I had an event that they thought was heart related it came back at 5 which was normal so they sent me home. 4 days later I had a heart attack. My Triponin levels were checked in the ER and they were at 25 then the next check an hour later 475 then another jump into the thousands 13,500 I had SCAD, spontaneous, coronary artery dissection. My levels have finally trended down and are back in the 20’s. I’ll take that any day over an elevated number like before. But if they go higher and higher expect you are having a heart attack. They found mine on a stress test because other test results other then the Triponin came back normal. Hope that helps

Troponin is an enzyme released by damaged myocytes...heart muscle tissue. When you experience an infarct or an arrythmia, your myocardial tissue can release troponin which is used as a biomarker by the ER/cardiology group to assess the extent of damage and what, if anything, they can do about it. Next would come imaging, such as an angiogram or MRI to determine where the damage might have occurred. From there, a game plan about how to correct the problem, mitigate it if that is possible, or to treat it in such a way that no further deterioration is likely.

My chart says normal troponin is less than .08 but there seem to be different systems. One ER had me just over 10, during afib, which was the limit of normal, and that must have been a newer "high sensitivity test" (See at bottom here). There are two types: https://my.clevelandclinic.org/health/diagnostics/22770-troponin-test

"There are two types of troponin that are more detectable after heart muscle damage, which use the letters I and T to tell them apart.

Troponin I (cTnI). This kind of troponin is unique to heart muscle.
Troponin T (cTnT). Troponin T does exist in other types of muscle, but the amounts are very limited. The Troponin T in your heart muscle also has a slightly different structure, which doesn’t occur anywhere else in your body.
Troponin levels usually increase sharply within three to 12 hours after a heart attack and peak about 24 hours after the heart attack. They will also remain high for several days."

But Verywellhealth has this:

High-Sensitivity Test
The Food and Drug Administration (FDA) approved the first high-sensitivity version of the troponin test in 2017.6 This is now the more common type of test used since it can pick up smaller amounts of the protein than the previous tests.

Elevated levels of troponin for the various types and tests include:7

cTnI: More than 0.04 ng/ml
cTnT: More than 0.01 ng/ml
cTnI high-sensitivity test: For females more than 15 ng/L; for males more than 20 ng/L
cTnT high-sensitivity test: For females more than 10 ng/L; for males more than 15 ng/L
An elevated troponin level is consistent with a heart attack and heart muscle damage. If you have a normal or undetectable troponin level, it may be repeated if there is a very high suspicion that you could be having a heart attack.