Troponin I

Troponin I is a protein found in heart muscle cells that helps regulate muscle contraction. When the heart muscle is damaged, such as during a heart attack, troponin I is released into the bloodstream. Measuring its levels through a blood test can help doctors detect and assess heart injury. Elevated troponin I levels indicate some degree of heart muscle damage, guiding diagnosis and treatment decisions. It is a specific and sensitive marker used routinely in emergency and cardiology settings to evaluate for acute coronary events.