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Albumin, 24-Hour Urine without Creatinine
Test Code4555
CPT Codes
82043
Includes
CPT code 81050 may be added at an additional charge for volume measurement
Preferred Specimen
5 mL 24-hour urine collected in a sterile leak-proof container - no preservative
Patient Preparation
Exercise within 24 hr, infection, fever, congestive heart failure, marked hyperglycemia, and marked hypertension may elevate urinary albumin excretion over baseline values
Minimum Volume
2 mL
Other Acceptable Specimens
Urinalysis transport tube (yellow-top, blue fill line, preservative tube)
Instructions
Submit 5 mL aliquot from a well-mixed 24-hour, submitted in a plastic, leak-proof container. Do not use preservatives. Record 24-hour urine volume on test request form and urine vial.
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 7 days
Refrigerated: 14 days
Frozen: 6 months
Refrigerated: 14 days
Frozen: 6 months
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Acid preserved urine
Methodology
Turbidimetric
Setup Schedule
A.M. Sets up 3 days a week.
Clinical Significance
Albumin excreted in the urine (Microalbumin) is a sensitive marker of nephropathy. It is used to screen for early renal disease in diabetic patients.
