H-FABP (cardiac-type fatty acid binding protein) is a small cytoplasmic protein, 15 kDa in size , that is released by cardiac muscle cells after an ischemic event.
It belongs to the intracellular fatty acid binding proteins (FABPs) and is involved in active fatty acid metabolism.
Its main role is to transport fatty acids from the cell membrane to the mitochondria, where they are used for oxidation .
Human fatty acid binding protein (H-FABP) is a sensitive biomarker for myocardial necrosis.
It can be used to confirm or rule out a diagnosis of acute myocardial infarction (AMI) and to monitor a recurrent infarction.
This protein appears in the blood about 20 minutes after the onset of infarction symptoms and can still be detected up to a day later