Kidney biopsy is a diagnostic technique allowing in vivo collection of kidney tissue material for a histopathological examination, which makes it possible to diagnose disorders in the normal organ structure. The most common biopsy used for a sample collection is oligobiopsy. Renal biopsy is a safe and very useful diagnostic method allowing direct evaluation of disorders in the normal kidney structure and precise determination of the disease process nature with regard to qualitative and quantitative changes.

Key words: Biopsy, Cat, Dog, Kidney