Transthyretin, known also as prealbumin or thyroxine-binding prealbumin, serves as a transport protein for thyroxine, and as a carier protein for RBP (Section 16.2.4). It has a longer half-life (i.e., 2d) (table 16.3) and a slightly larger body pool (0.010 g/kg body weight), compared to RBP, although the sensitivities of these two serum proteins to protein deprivation and treatment are similar. Transthyretin has a high content of the amino acid tryptophan and a high proportion of essential to nonessential amino acids. Thus it can be used as an indicator of the availability of essential amino acids in the body (Spiekerman, 1993.).
file lengkap di sini: serum-transthyretin