some tests mainly attempt to assess the integrity of the glomerulus : high molecular weight proteinuria , glomerular basement membrane ( gbm ) antigens in blood and in urine , circulating anti-gbm antibodies , glomerular filtration rate after an acute oral load of proteins , and estimation of membrane negative charges ( ie , glomerular polyanion ) .
C0022663
glomerulus
C0599297
glomerular basement membrane