Preferred Specimen(s) 5.0 mL 24 hour urine – no preservative
Instruction Submit 5.0 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 Container Plastic leak proof container
Transport Temperature Refrigerated
Reject Criteria Frozen
Methodology Spectrophotometry
Clinical Significance 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.