A renal biopsy involves taking a small sample of kidney tissue for diagnostic purposes. Some synonyms for this medical procedure include renal needle biopsy, kidney biopsy, and renal parenchymal biopsy. A renal needle biopsy is a minimally invasive procedure that involves inserting a needle through the skin and into the kidney to extract a tissue sample. This procedure is typically performed under local anesthesia, and patients can return home the same day. A kidney biopsy may be recommended if a patient is experiencing symptoms such as blood in their urine, kidney failure, or unexplained swelling in the kidneys. Overall, renal biopsy is a useful tool for diagnosing and managing kidney diseases.