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Microalbumin Urine, Random
Test CodeRUMA
CPT Codes
82043
Preferred Specimen
10 mL urine in urine tube
Minimum Volume
1.0 mL random urine in a plastic sterile container
Other Acceptable Specimens
1.0 mL urine in clean, plastic urine container
Transport Temperature
Refrigerated
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Contaminated or short volume samples
Methodology
Photometric
Setup Schedule
Monday through Sunday; Continuously
Limitations
Because of variability in urinary albumin excretion, two of three specimens collected within a 3- to 6-month period should be abnormal before considering a patient to have crossed one of these diagnostic thresholds. Exercise within 24 h, infection, fever, congestive heart failure, marked hyperglycemia, and marked hypertension may elevate urinary albumin excretion over baseline values.
Clinical Significance
Microalbuminuria is characterized by urinary albumin excretion above normal levels in the absence of clinically detectable nephropathy. Mildly increased excretion of albumin has been recognized to be a predictor of impending development of clinical renal disease in patients with hypertension or diabetes mellitus.
