Creatinine Urine Test

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Latest Edit: Hector 2014-03-24 (EDT)

See Also Lab Tests

This test is used to help detect and evaluate kidney dysfunction or decreased blood flow to the kidneys. [1], [2]


  • Creatinine is a waste product that is produced by muscles from the breakdown of a compound called creatine.
  • Creatine is involved in producing energy needed to contract muscles in the body.
  • The amount of creatinine produced in the body is dependent on muscle mass.
  • Since almost all creatinine is eliminated from the body by the kidneys, levels in the blood can indicate how well the filtering units in the kindeys, known as the glomer

Patient Preparation

  • No preparation required.

Interfering Factors

  • Factors which can cause increased levels:
  • Drugs: Aminoglycosides, cimetidine, cisplatin, cephalosporins

Clinical Implications


High levels indicate:

  • None noted

Low levels indicate:

Associated Tests


  1. Pagana Kathleen D, Pagana Timothy J (2006) Mosby's Manual of Diagnostic and Laboratory Tests, Mosby.
  2. Weatherby Dicken, Ferguson Scott (2002) Blood Chemistry and CBC Analysis: Clinical Laboratory Testing from a Functional Perspective, Bear Mountain.