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Test Code LAB4145 MICROALBUMIN, URINE, 24 HOUR

Important Note

24 hour urine specimen. Collection period and Total volume must be noted for calculation of results.

Specimen Type

24-hour urine collection

Collection Instructions

Collect a 24-hour urine in a dark plastic urine container with no preservative. Refrigerate during collection. Deliver to the laboratory on ice.

Specimen Volume

50 mL

Minimum Volume

40 mL

Turnaround Time

STAT: 1 hour
Routine: 4 hours

Test Schedule

Daily

Sample Stability

Refrigerated: 3 days
Frozen: 5 months

Specimen Processing

Invert 24 hour urine container several times to mix the specimen.
Aliquot 50 mL of a well-mixed 24-hour urine collection into a leakproof plastic urine container.
Aliquot 5 mL into a transparent red top tube.
Record collection time and total volume.
Freeze 50ml Specimen Aliquot.

Method

Colorimetric

Reference Ranges

Microalbumin, Urine <18 mg/L

Microalbumin, Quant <30 mg/24h

Excretion Rate 0-30 ug/min

Synonyms

Quantitative Microalbumin

Test Components

Microalbumin, Urine, mg/L;

Microalbumin, Urine, Quant, mg/24h;

Microalbumin Excretion Rate, ug/min;

Total Volume, mL;

Collection Period, hr

CPT Codes

82043

Rejection Criteria

Blood or other body fluids; Specimens contaminated with fecal material will be rejected.