title: Laboratory test for kidney function--urea or creatinine.
mesh_terms: D000208:Acute Disease; D002908:Chronic Disease; D003404:Creatinine / Q000097:blood*; D006801:Humans; D007674:Kidney Diseases / Q000503:physiopathology; D007677:Kidney Function Tests / Q000379:methods*; D014508:Urea / Q000097:blood*
chemical_list: D014508:Urea; D003404:Creatinine