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Microalbumin, Urine, 24 hours
MessageChemistry
Test Code
LAB410
Alias/See Also
Urine Microalbumin 24 hours
Urine Albumin 24 hours
Urine Albumin 24 hours
Preferred Specimen
24 hour urine specimen
Minimum Volume
300 uL urine
Instructions
No preservative necessary.
Refrigerate urine during collection.
Submit entire collection to Laboratory with completed order requisition, to include:
Date Urine Collection Started
Date Urine Collection Ends
Time Urine Collection Started
Time Urine Collection Ends
LAB: Properly labeled Timed collection received with Order requisition.
Measure urine volume and record on order requisition.
Mix well, aliquot 5 mL and centrifuge.
Take spun urine aliquot and Order Requisition to Tech for
testing.
Tech will verify HOURS of collection on Order Requisition:
Date Urine Collection Started
Date Urine Collection Ends
Time Urine Collection Started
Time Urine Collection Ends
Submit 5 mL random urine in a plastic, leak-proof container. Do not use preservatives. Mix well, if aliquotting.
Vigorous exercise can cause a transient increase in albumin excretion. As a result, patients should refrain from vigorous exercise in the 24 hours prior to the test.
Refrigerate urine during collection.
Submit entire collection to Laboratory with completed order requisition, to include:
Date Urine Collection Started
Date Urine Collection Ends
Time Urine Collection Started
Time Urine Collection Ends
LAB: Properly labeled Timed collection received with Order requisition.
Measure urine volume and record on order requisition.
Mix well, aliquot 5 mL and centrifuge.
Take spun urine aliquot and Order Requisition to Tech for
testing.
Tech will verify HOURS of collection on Order Requisition:
Date Urine Collection Started
Date Urine Collection Ends
Time Urine Collection Started
Time Urine Collection Ends
Submit 5 mL random urine in a plastic, leak-proof container. Do not use preservatives. Mix well, if aliquotting.
Vigorous exercise can cause a transient increase in albumin excretion. As a result, patients should refrain from vigorous exercise in the 24 hours prior to the test.
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 1 day
Refrigerated: 7 days
Frozen: Not Recommended
Refrigerated: 7 days
Frozen: Not Recommended
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Acid preserved urine
Methodology
Turbidimetric
Setup Schedule
Everyday
Report Available
Within 8 hours
Limitations
Contamination of urine specimens with residual serum or plasma present on the surface of gloves, sample cups, caps, vial stoppers or disposable tips may result in falsely elevated urinary albumin values. Take precautionary measures to prevent contamination.
Urine samples should not be acidified.
Certain drugs and clinical conditions are known to alter urinary albumin concentration in vivo.
Urine samples should not be acidified.
Certain drugs and clinical conditions are known to alter urinary albumin concentration in vivo.
Reference Range
Category 24 Hour Collection (mg/ 24 hours)
Normal: <30
Microalbuminuria 30-300
Clinical Albuminuria: >300
The ADA recommends that at least two of three specimens collected within a 3-6 month period be abnormal before considering a patient to be within a diagnostic category.
Normal: <30
Microalbuminuria 30-300
Clinical Albuminuria: >300
The ADA recommends that at least two of three specimens collected within a 3-6 month period be abnormal before considering a patient to be within a diagnostic category.
Performing Laboratory
Hoag Newport
