Use for nutritional assessment of vitamin B6.
Quantitative High Performance Liquid Chromatography-Tandem Mass Spectrometry
New York DOH Approval Status
Collect specimen after an overnight fast.
Green (Sodium or Lithium Heparin), Lavender (EDTA), Pink (K2 EDTA), Plasma Separator Tube (PST), Serum Separator Tube (SST), or Plain Red.
Separate plasma or serum from cells, protect from light and transfer 1 mL plasma or serum to an ARUP Amber Transport Tube within 1 hour of collection. (Min: 0.5 mL) Separate light-protected specimens must be submitted when multiple tests are ordered.
Whole blood. Specimens not protected from light. Icteric specimens.
After separation from cells: Ambient: Unacceptable; Refrigerated: 1 week; Frozen: 2 months
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.
This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the US Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes.
Laboratory Developed Test (LDT)
This test measures pyridoxal 5-phosphate, the biologically active form of vitamin B6.
|Component Test Code*||Component Chart Name||LOINC|
|0080111||Vitamin B6 (Pyridoxal 5-Phosphate)||62236-5|
- P 5-P
- Pyridoxal Phosphate