What are the indications for a renal biopsy?
Although patients with all varieties of renal parenchymal disease have undergone renal biopsy, the biopsy is of greatest value in patients with large amounts of proteinuria or changes in renal function, patients with systemic disease, certain patients with acute renal failure, and patients with an active urinary sediment. Important clinical information such as serum creatinine, serologic studies, and the degree of proteinuria are useful in assisting the interpretation of the renal biopsy.