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Test Directory

3267 Microalbumin/Creatinine Ratio, 24 Hour Urine

Specimen Type
Specimen Stability
Reference Range
24 Hour Urine
7 Days
See Report

Specimen Requirements

Specimen Type: 24 Hour Urine
Container: 1 24 Hour Urine Container (without Preservative)
Temperature: Refrigerated
Preferred Vol: 50.00 mL
Min Vol: 50.00 mL

Method

Turbidimetric

Schedule

Mon-Fri

Turn-Around Time

24hrs

Instructions/Notes

24 Hr Urine collection (No preservatives). Must indicate total volume on container and requisition.

Clinical Utility

Microalbumin is albumin excreted in the urine and is a sensitive marker of nephropathy. It is used to screen for early renal disease in diabetic patients. Creatinine measurement in a 24 hour urine is used as a renal function test and is useful in the evaluation of skeletal muscle disease, muscular dystrophy and Polymyositis; 24 hour urine creatinines are also increased in primary myopathy. Values correlate well with total body muscle mass in persons with normal renal function, food intake, and a diet of constant composition. Excretion declines with age and is increased in acute infection, injury, severe emotional stress, rigorous exercise, and diets high in protein, creatine, and creatinine.

CPT Codes

82043, 82570

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