Retinol-binding Protein (RbP)
Use
Serum concentrations reflect the synthesis capacity of the liver and may indicate early malnutrition, acute and chronic hepatic disease, advanced chronic renal insufficiency, and cystic fibrosis. Assess nephritic syndrome and protein-losing enteropathy. Due to the short half-life of approximately 12 hours, RBP may be suitable for monitoring the nutritional status and efficacy of parenteral nutrition.1
Special Instructions
Responsible for binding and transporting retinol (vitamin A).
Limitations
Gross lipemia that cannot be clarified by ultracentrifugation and heat-inactivated samples are causes for rejection, which may limit the test's applicability in certain clinical contexts.
Methodology
Immunoassay
Biomarkers
LOINC Codes
- 1836-6
- 1836-6
Result Turnaround Time
3-6 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
1 mL
Minimum Volume
0.4 mL
Container
Red-top tube, gel-barrier tube, or green-top (heparin) tube
Collection Instructions
Separate serum or plasma from red blood cells.
Storage Instructions
Room temperature
Causes for Rejection
Gross lipemia that cannot be clarified by ultracentrifugation; heat-inactivated samples
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 14 days |
| Refrigerated | 14 days |
| Frozen | 14 days |
Other tests from different labs that may be relevant