Did you mean Troponin? Troponin shows up in the blood when there's been damage to heart muscle.

Yes I meant that! I spelled it wrong on Google, then copy/pasted the wrong word from the suggested replacement.

	▲	andy_ppp 7 days ago \| parent [-]
		It’s only if heart muscle dies does that show up, you can have an important artery narrow without symptoms until suddenly a bit of plaque breaks off completely blocking a path causing bits of muscle to actually die.