Vitamin B2, Blood (Referred Out) - Saskatoon

Overview

Description

Ordering recommendation

• Evaluation of persons who present the signs of ariboflavinosis
• Fasting-overnight (>8 hours) (infants-draw prior to next feeding)

Alias

• Riboflavin

Specimen Information

Specimen types accepted

• Whole blood

Specimen collection container

• Preferred collection container: Lavender (EDTA) 4.0 mL
• Alternate collection container: Lavender (EDTA) 3.0 mL

Required volume

• Optimal volume: 4.0 mL full collection tube
• Minimum volume: 0.2 mL whole blood

(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.)

Transport and stability

• Aliquot into an amber vial to protect from light.
• Store frozen

Rejection criteria

• Receipt of specimen not protected from light
• Specimens received where the proper collection protocols were not followed
• Pathology and Laboratory Medicine Acceptance and Rejection Criteria

Testing Information

Clinical interpretation

• Evaluation of personswho present the signs of ariboflavinosis

Performance

Methodology

• Liquid chromatography/tandem mass spectrometry (LC/MS-MS)

Days/times performed

Availability	Shipped Mondays and Wednesdays
Testing site	Referred out by St. Paul’s Hospital Laboratory to Dynacare Laboratories (London, ON)

 

Maximum laboratory time

Results reporting

• 7 day turnaround time by testing laboratory

Last Updated: January 9, 2026