albumin/creatinine in urine

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* no need to monitor in patients taking ACE inhibitor or ARB[1]

Reference interval

Clinical significance

  • quantitation of albumin cannot be done by the usual dipstick or quantitative protein methods
  • measurement small amount of albumin in the urine requires a sensitive immunoassay technique.

# Albumin & Creatinine in same units.

Microalbuminuria is 0.30 > Alb/Creat > 0.030

Macroalbuminuria is Alb/Creat > 0.30



  • 1st voided morning urine specimen is best


Drug interferences:


More general terms

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Additional terms



  1. 1.0 1.1 1.2 Medical Knowledge Self Assessment Program (MKSAP) 11,18,19. American College of Physicians, Philadelphia 1998, 2018, 2021.
  2. 2.0 2.1 Sumida K et al Conversion of Urine Protein-Creatinine Ratio or Urine Dipstick Protein to Urine Albumin-Creatinine Ratio for Use in Chronic Kidney Disease Screening and Prognosis. An Individual Participant-Based Meta-analysis. Annals of Internal Medicine. July 14, 2020 PMID:
    Harrison TG et al From Proteinuria to Albuminuria: Great Expectations for Kidney Failure Risk Prediction. Annals of Internal Medicine. July 14, 2020 PMID:
    Urine Protein-Creatinine Conversion

Patient information

albumin in urine (albumin/creatinine, microalbumin) patient information