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Pathology and Laboratory Medicine
Test Catalogue

​Retinol Binding Protein


Ordering Recommendations

Specimen Requirements​ ​

  • ​Serum
  • Preferred Collection Container: Red (non-gel)
  • Alternative Collection Container: None
​Collection Procedure
  • Separate serum from cells ASAP or within 2 hours of collection
  • Send to SPH lab at room temperature
  • Centrifuge and aliquot serum into a transport tube
  • Freeze immediately upon receipt in SPH lab
  • Ship frozen to referral lab
​Required Volume
  • ​Optimal Volume: Full 4.5 mL Full collection tube
  • Minimum Volume: 1 mL
    (Submitting the minimum volume makes it impossible to repeat the test or perform confirmatory/reflex testing. In some situations, a minimum volume may require a second collection.)
  • After separation from cells, specimen is stable at room temperature for 14 days and frozen for 2 months 
Grounds for Rejection​

Testing Information​ ​

  • ​Shipped weekly, Wednesdays
Testing Site​
  • ​Referred out by St. Paul’s Hospital Laboratory​ to Dynacare (London, ON)

Results Reporting​
  • 10 day turn around time by testing laboratory
​Clinical Interpretation

  • Result interpretation should be correlated with clinical and other laboratory findings.

​Additional Comments
  • Retinol binding protein (RBP) is a carrier protein that binds or transports retinol (vitamin A). Serum RBP concentration may be useful as an indicator of malnutrition, acute and chronic hepatic disease, advanced chronic renal insufficiency, and cystic fibrosis. Assess nephritic syndrome and protein – losing enteropathy. 
SHR LIS Test Code​
  • MISTC (For Laboratory Use Only)

Test Ordering Requirements​ ​

​Forms Required
​Clearance Required 
  • ​Ordering physician must have test approved by the biochemist on call, cell 306-227-7058 prior to collection


​If you cho​ose to print this information, it is valid only on date of print.

Laboratory Controlled Document LSM-742 v6

Last Modified: Friday, October 4, 2019 |
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