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Test Code N.MALBCREAT MICROALBUMIN:CREATININE RATIO RANDOM

Important Note

Optimal urine sample should be fresh and free of particulates

Urine creatinine is included in random/ "spot" testing to correct for variations in hydration.

Additional Codes

MALBCREAT

Methodology

Automated Chemistry Analyzer

Specimen Requirements

Random Urine

Container: Leakproof plastic urine container

Specimen Collection: 10 mL (minimum 3 mL)

  1. 10 mL aliquot of random urine; midstream collection preferred.
  2. Store and transport refrigerated.

Specimen Transport/Stability

Refrigerated: 6 days

Specimen Rejection

Grossly bloody urine

Turbid urine that does not clear with centrifugation

Maximum Laboratory Time

24 - 48 hours

Reference Ranges

 

Microalbumin, Random Urine mg/L
  5.1 - 20.0
Creatinine, Random Urine mg/dL
  80.00 - 170.00
Microalbumin/Creatinine Ratio  
Normal Ratio. Repeat yearly. < 30
Increased risk for diabetic nephropathy. Two of three MALB:CRE ratios in this range indicate microalbuminuria and diabetic nephropathy.  > 30 - 300
Two of three MALB:CRE ratios in this range confirms overt clinical nephropathy.  > 300

* Exercise within 24 hrs, infection, fever, congestive heart failure, marked hyperglycemia, and marked hypertension may elevate urinary albumin excretion over baseline values.

Day(s) Test Set Up

Daily

Test Classification and CPT Coding

82043

82570