Ordering Recommendation

Use for nutritional assessment of vitamin B6.

Mnemonic
VIT B6
Methodology

Quantitative High Performance Liquid Chromatography-Tandem Mass Spectrometry

Performed

Sun-Sat

Reported

1-4 days

New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation

Collect specimen after an overnight fast.

Collect

Green (Sodium or Lithium Heparin), Lavender (EDTA), Pink (K2 EDTA), Plasma Separator Tube (PST), Serum Separator Tube (SST), or Plain Red.

Specimen Preparation

Protect from light during collection, storage, and shipment. Separate plasma or serum from cells within 1 hour of collection. Transfer 1 mL plasma or serum to an ARUP Amber Transport Tube. (Min: 0.5 mL)

Storage/Transport Temperature

Frozen.

Unacceptable Conditions

Whole blood. Specimens not protected from light. Icteric specimens.

Remarks
Stability

After separation from cells: Ambient: Unacceptable; Refrigerated: 1 week; Frozen: 2 months

Reference Interval

20-125 nmol/L

Interpretive Data

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.

Compliance Statement B: For laboratory developed tests not using a RUO kit, and for FDA approved, cleared or 510(k) exempt assays with alterations. This test was developed and its performance characteristics determined by ARUP Laboratories. The U. S. Food and Drug Administration has not approved or cleared this test; however, FDA clearance or approval is not currently required for clinical use. The results are not intended to be used as the sole means for clinical diagnosis or patient management decisions.

Note

This test measures pyridoxal 5-phosphate, the biologically active form of vitamin B6.

Hotline History
N/A
CPT Codes

84207

Components
Component Test Code* Component Chart Name LOINC
0080111 Vitamin B6 (Pyridoxal 5-Phosphate) 62236-5
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Aliases
  • P 5-P
  • Pyridoxal Phosphate
Vitamin B[6] (Pyridoxal 5-Phosphate)