The microscopic change in the urinary bladder is inflammatory. Urinalysis - qualitative and semiquantitative evaluation of renal products. Normally, for every doubling in serum creatinine concentration, the GRF declines by one-half. Normal serum creatinine concentration is 1. Renal Biopsy - Do's and Don'ts.
Percutaneous technique is applied.
The renal biopsy should not be a substitute for a complete clinical and laboratory workup of the patient. We have studied functional and morphological aspects of the renal and lower urinary tract diseases by dissecting the organ system into its individual structural components. A prototype animal disease has been selected to demonstrate the malfunction of each component. It is proportional to the net difference between opposing hydrostatic and colloid osmotic forces across the glomerular capillary wall. The major advantage of measuring GRF over BUN or serum creatinine is that GRF detects reduced renal function before clear differences are seen in BUN or serum creatinine concentrations.