https://www.templehealth.org/services/conditions/heart-attack-myocardial-infarction/diagnosis
Blood tests can detect if high levels of proteins (biochemical including CK, CK-MF and troponin) exist in the bloodstream. This would suggest a heart attack. Other tests may be performed if emergency treatment does not resolve the symptoms, or if emergency or preventive treatments must be planned. These tests may include: