Test Overview
Test Methodology

Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)

Test Usage

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.

Reference Range *

5 - 50 mcg/L

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details
Days Set Up
Monday - Thursday, Saturday, Sunday
Analytic Time

2 - 5 days

Soft Order Code
PLP
MiChart Code
Pyridoxal 5-Phosphate (Vitamin B6) (Sendout)
Synonyms
  • B6
  • Pyridoxal Phosphate
  • Vitamin B6
Laboratory
Sendout
Reference Laboratory
Mayo PLP (60295)
Section
Special Testing
Specimen Requirements
Collection Instructions

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 in a 4 degree centrifuge within 2 hours, aliquot plasma into plastic vial, and freeze. Protect specimen from light.

Special Handling

Fasting specimen. Protect specimen from light. STRICT FROZEN

Alternate Specimen
PST is acceptable
Normal Volume
1 mL plasma
Minimum Volume
0.5 mL plasma
Storage Temperature
STRICT frozen
Additional Information

Test sent to Mayo Medical Laboratories.

Billing
CPT Code
84207
Fee Code
20442
LOINC
30552-4
NY State Approved
No