Albumin, Timed Urine Quantitative
| Abbrev Code: | UMALBT | ||
| Order Code: | LAB3839 | Order Name: | Microalbumin Timed Urine |
| Methodology: | Immunoturbidimetric Tina Quant | ||
| 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. | ||
| Associated Links: | |||
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 (Roche-Grand Itasca, Roche-Lakes, Roche-Northland, Roche-Range, Roche-UMMC East) |
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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