nephrotoxicity tests , which have proved to be the most useful in these epidemiological studies , rely on the determination of specific urinary proteins which , according to their size , reflect the functional integrity of the proximal tubule ( e.g. , retinol-binding protein or beta 2-microglobulin ) or the glomerulus ( e.g. , albumin , immunoglobulin g ) .
C0033684
proteins
C0001924
albumin