Albumin, Timed Urine Quantitative


Abbrev Code:UMALBT   
Order Code:LAB3839Order Name:Microalbumin Timed Urine
Methodology:Roche: Immunoturbidimetric Tina Quant
Vista: Nephelometric
CPT Codes: 82043 x1, 82043 x1, 81050 x1, 81050 x1
Test Includes:Albumin urine, mg/L; albumin urine mg/spec; duration in hours, volume in mL
Turnaround Time:Performed and reported 24 hours/day.
Special Instructions:NKDEP/IFCC concensus guidelines (2009) state: Use of the term "Urine Albumin" is recommended;  "Microalbumin" is discouraged.
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Urine Collection Procedure



Collection Instructions

Specimen:Urine, timed collection preferred
Optimal Volume:Submit entire collection; analysis requires 0.6 mL
Container:3 L plastic jug
Collection Instructions:Acceptable urine samples: 24-hour urine, overnight urine (8-12 hours), 1-2 hour urine. Frozen urine is not recommended.


Processing and Shipping

Specimen Processing:Mix collection well before aliquot is taken. Aliquot 1 mL, 0.6 mL minimum. Store in refrigerator.
Shipping Instructions:Ship at refrigerated temperature.
Stability:7 days at room temperature; 1 month refrigerated; 6 months frozen
Test Performed at or Referral Lab Chemistry  (CSC Maple Grove, CSC Mpls, Lakes, Northland, Oxboro Clinic, Range, Roche-UMMC East, UMMC West Bank)


Interpretive

Reference Range:Urine Chemistry Reference Ranges
Use:Early predictor of clinical diabetic nephropathy. Kidney changes include a rise in urinary albumin secretion detectable only by sensitive assays. At this stage, Albustix is negative and renal function is normal by standard assays.


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