abnormal kidney physiology abnormal tubuloglomerular feedback response csmith any anomaly in the blood flow control mechanism that is operated in the juxtaglomerular apparatus of the kidney and involved in renal autoregulation by limiting changes in the glomerular filtration rate. TGF responds to changes in the concentration of NaCl in the tubular fluid at the level of the macula densa 2011-10-11T03:56:31Z abnormal TGF response abnormal tubuloglomerular feedback mechanism MP:0011295 MPheno.ontology