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Lab Dept:
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Urine/Stool
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Test Name:
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MICROALBUMIN, URINE
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General Information
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Lab Order Codes:
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UMAR
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Synonyms:
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Albumin/Creatinine Ratio
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CPT Codes:
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82043 – Albumin: urine, microalbumin, quantitative
82570 – Creatinine; other source
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Test Includes:
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Urine Microalbumin in mg/L, Urine Creatinine in mg/dL and Albumin/creatinine ratio in mg albumin/g creatinine
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Logistics
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Test Indications:
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Increased excretion of albumin (microalbuminuria) is a predictor of future development of clinical renal disease in patients with hypertension or diabetes mellitus.
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Lab Testing Sections:
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Chemistry
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Phone Numbers:
Minneapolis:
Saint Paul:
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612-813-6280
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651-220-6550
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Test Availability:
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Daily, 24 hours
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Turnaround Time:
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1 – 2 days
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Special Instructions:
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N/A
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Specimen
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Specimen Type:
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Urine, random collection
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Container:
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Plastic leakproof container (No preservatives)
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Draw Volume:
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1 - 3 mL from a random urine collection
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Processed Volume:
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Minimum: 1 mL urine
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Collection:
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A random urine sample may be obtained by voiding into a urine cup and is often performed at the laboratory. Bring the refrigerated container to the lab. Make sure all specimens submitted to the laboratory are properly labeled with the patient’s name, medical record number and date of birth.
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Special Processing:
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N/A
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Patient Preparation:
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None
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Sample Rejection:
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Mislabled or unlabeled specimens
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Interpretive
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Reference Range:
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Albumin/creatinine ratio (A/C ratio)
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<30 mg/g Normal
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30 - 300 mg/g Microalbuminuria
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>300 mg/g Clinical albuminuria
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Urine Creatinine:
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No reference ranges established
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Critical Values:
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N/A
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Limitations:
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N/A
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Methodology:
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Turbidimetric/Immunoassay - PETINIA
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References:
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Microalbumin Flex® reagent cartridge, Siemens Healthcare Diagnosstics Inc. 2008-03-04 PN 717114.001 – US. Rev C
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Jacobs & DeMott Laboratory Test Handbook (2001) Lexi-Comp, Inc, Hudson, OH, 5th Edition
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Biorad Liquichekä Urine Chemistry Control Product insert, Bio-Rad Laboratories, Irvine, CA 92618
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Updates:
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8/29/2005: Method change, previously listed as Immunoturbidimetric /Modified benedict/Behre.
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