The determination of urea, ammonia, and urease.
D000641:Ammonia / Q000032:analysis* / Q000097:blood / Q000302:isolation & purification; D006801:Humans; D008722:Methods; D008832:Microchemistry; D010091:Oximes; D014508:Urea / Q000032:analysis*; D014510:Urease / Q000032:analysis*
D010091:Oximes; D000641:Ammonia; D014508:Urea; D014510:Urease