Retinol Binding Protein, Random Urine - Cancel and reorder as MMMISC
| Abbrev Code: | RRBP | ||
| Order Code: | LAB6315 | Order Name: | Retinol Binding Protein, Random Urine |
| Methodology: | Enzymatic colorimetric assay; Immunonephelometry | ||
| CPT Codes: | 83883 x1, 82570 x1 | ||
| Turnaround Time: | Specimens are sent to reference laboratory Mon-Fri; results are reported within 7 days. | ||
| Compliance: | This test was developed and its performance characteristics determined by Laboratory Medicine and Pathology, Mayo Clinic. This test has not been cleared by the U.S. Food and Drug Administration. |
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Collection Instructions
| Specimen: | Urine |
| Optimal Volume: | 5 mL |
| Minimum\Peds Volume: | 1 mL |
| Container: | Plastic leakproof container, sterile |
| Causes for Rejection: | All specimens will be evaluated at Mayo Clinic Laboratories for test suitability, |
Processing and Shipping
| Specimen Processing: | Mix collection well before aliquot is taken. Aliquot 5 mL, 1 mL minimum. Store in refrigerator. |
| Shipping Instructions: | Ship at refrigerated temperature. |
| Stability: | 7 days refrigerated (preferred) or frozen. |
| Test Performed at or Referral Lab | Lab Sendouts (Mayo) |
| Referral Lab number: | RBR |
Interpretive
| Reference Range: | 18 years or older: <190 mcg/g creatinine.
Reference values have not been established for patients that are less than 18 years of age. |
| Limitations: | Since this is a nephelometric assay, turbidity and particle (e.g., cells, crystals) in the specimen can interfere with the test. Therefore, all urine specimens should be centrifuged at ambient temperature prior to testing, |
| Use: | Retinol-binding protein above the reference values may be indicative of a proximal tubular dysfunction. |
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