By Mary Ellen Posthauer RDN, CD, LD, FAND
For many years clinicians have relied on serum proteins, such as albumin and pre-albumin, as markers of nutritional status. However, current research indicates that there is little data to support this practice. Albumin and pre-albumin (transthyretin) are acute phase proteins. The advent of the inflammatory process - including infection, trauma, surgery, burns, and other wounds - elicits the acute phase response. During this acute phase response, these proteins decline and are called negative acute phase reactants.