Retinol Binding Protein(RBP)

Test ID: 


CPT code:


Clinical 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

Test Information:

Responsible for binding and transporting retinol (vitamin A)

Specimen Type:

Serum or plasma

Requested Volume: 

1 mL

Minimum Volume: 

0.4 mL

Container Type: 

Red-top tube, gel-barrier tube, or green-top (heparin) tube


Separate serum or plasma from red blood cells.

Storage Instructions:

Room temperature

Stability Requirements:



Room temperature

14 days


14 days


14 days

Freeze/thaw cycles

Stable x3

Rejection Criteria

Gross lipemia that cannot be clarified by ultracentrifugation; heat-inactivated samples

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MCI Diagnostic

Providing top patient care with fast results. 

7018 South Utica Avenue

Tulsa, Oklahoma 74136

Hours of Operation

Mon – Sat: 7AM-11PM

Sun: 7AM-3PM

Government Contract

Mon – Sat: 7AM-11PM

Sun: 7AM-3PM


Mon – Sat: 7AM-11PM

Sun: 7AM-3PM

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