Blood or urine is commonly collected to test for how the kidneys are functioning. Some kidney function tests include: creatine, creatinine-urine, creatine clearance, and BUN test.
Review Date 11/12/2016
Updated by: Jennifer K. Mannheim, ARNP, Medical Staff, Department of Psychiatry and Behavioral Health, Seattle Children's Hospital, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.