Fatty acid binding proteins are a family of small, highly conserved, cytoplasmic proteins (14-15kDa) that bind long chain fatty acids, their CoA derivatives, bilirubin, organic anions and other small hydrophobic molecules. Their primary role is the regulation of fatty acid uptake and intracellular transport. (1) To date, nine different fatty acid binding proteins have been identified and named by tissue of first discovery or numerically by gene. (1-9) Fatty acid binding proteins are abundantly present in numerous cell types and due to their small size, can rapidly leak from cells after trauma. As such, the measurement of elevated levels of fatty acid binding proteins in serum can be used as a diagnostic marker to monitor the extent of tissue damage
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