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HelpTest ID B6PRO Vitamin B6 Profile (Pyridoxal 5-Phosphate and Pyridoxic Acid), Plasma
Secondary ID
42360Useful For
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
Diagnosis and evaluation of hypophosphatasia
Differentiating between hypophosphatasia or dietary supplementation as the likely cause of elevated pyridoxal-5'-phosphate (PLP) levels
Specimen Type
Plasma HeparinShipping Instructions
Ship specimen in amber vial to protect from light.
Specimen Required
Patient Preparation:
1. Fasting: 12 hours, required; Infants should have specimen collected before next feeding, water may be taken as needed
2. For 24 hours before specimen collection, patient must not take multivitamins or vitamin supplements.
Supplies: Amber Frosted Tube, 5 mL (T915)
Collection Container/Tube:
Preferred: Green top (sodium or lithium heparin) or plasma gel separator (PST)
Acceptable: None
Submission Container/Tube: Amber vial
Specimen Volume: 1 mL
Collection Instructions:
1. Within 2 hours of collection, centrifuge at 4° C and aliquot into an amber vial.
2. Freeze immediately.
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Plasma Heparin | Frozen | 29 days | LIGHT PROTECTED |
Reject Due To
| Gross hemolysis | OK |
| Gross lipemia | OK |
| Gross icterus | OK |
Reference Values
PYRIDOXAL 5-PHOSPHATE
5-50 mcg/L
PYRIDOXIC ACID
3-30 mcg/L
Day(s) Performed
Monday through Thursday, Saturday, Sunday
Performing Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
82542
84207