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Catalog ID Ref VTB6 Vitamin B6 (Pyridoxal 5-Phosphate)

CPOE Test Name

CPOE Order: Ref Vitamin B6

DOE: Ref Vit B6

Synonyms

Vitamin B6, Pyridoxal 5-Phosphate, VTB6

Specimen Type

Red top tube

Specimen Requirements

Red top tube, collect 2.0 mL blood, protect from light

Serum 1.0 mL (0.5 mL minimum), frozen, protected from light

Storage and Transport

Serum stored frozen in ARUP amber vial until ready for transport to ARUP Laboratory

Reference Range

20-125 nmol/L

Causes for Rejection

Whole blood, specimens not protected from light, icteric specimens, insufficient quantity, unlabelled specimens

Turn Around Time

1-4 days

CPT / HCPCS Code

84207

Performing Lab

ARUP Laboratories

Methodology

HPLC-MS/MS

Interpretative Information

Pyridoxal 5'-phosphate measured in a specimen collected following an 8 hour or overnight fast accurately indicates vitamin B6 nutritional status. Non-fasting specimen concentration reflects recent vitamin intake.