Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Determining vitamin B6 status, including in persons who present with progressive nerve compression disorders, such as carpal tunnel and tarsal tunnel syndromes; determining the overall success of a vitamin B6 supplementation program; and diagnosis and evaluation of hypophosphatasia.
5 - 50 mcg/L
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
2 - 5 days
- Pyridoxal Phosphate
- Pyridoxal 5-Phosphate Level
- VITAMIN B6, PLASMA OR SERUM
- Vitamin B6
Collect specimen in a green top tube following an overnight (12-14 hour) fast. Patient should abstain from taking vitamin supplements for 24 hours prior to specimen collection. Centrifuge, aliquot plasma into plastic vial, and refrigerate. Protect specimen from light.
Fasting specimen. Protect specimen from light.
Test sent to Mayo Medical Laboratories.