CPT Code(s):
82043
Specimen Requirements:
Type: Random or Timed Urine
Sample Volume: 1 mL
Stability (collection to time of analysis/testing):
- Refrigerated: 7 days
- Frozen: 1 year
Methodology:
Immune complexes formed in solution scatter light in proportion to their size, shape and concentration. Turbidimeters measure the reduction of incident light due to reflection, absorption, or scatter. In the Beckman Coulter procedure, the measurement of the decrease in light transmitted (increase in absorbance) through particles suspended in solution as a result of complexes formed during the antigen-antibody reaction, is the basis of this assay.
Reported:
Within 24 hours
Reference Values:
| 24-Hour Collection (mg/24h) | Timed Collection (ug/min) | Spot Collection (ug/mg creatinine) | |
| Normal | < 30 | < 20 | < 30 ug/mg creatinine |
| Microalbuminuria | 30 – 299 | 20 – 199 | 30 – 299 |
| Clinical albuminuria | ≥ 300 | ≥ 200 | ≥ 300 |