Vitamin B-6

Test Code: TD_4956

CPT Code(s): 84207

$49

Test Details

Alternative Name(s)

Pyridoxal-5-phosphate
Vitamin B6

Test Includes

Vitamin B6

Methodology

High performance liquid chromatography (HPLC)

Rejection Criteria

Hemolysis
Room temperature samples
Refrigerated samples
Samples collected in serum separator tube
Whole blood
EDTA plasma

Reference Range(s)

By Report

Specimen Requirements

Preferred Specimen

Sodium or Lithium Heparin (Green Top) Tube

Minimum Volume

0.3 mL plasma or serum

Sample Stability

1 month frozen

Transport Temperature

Frozen

Collection Instructions

2 mL sodium or lithium heparin (green top) plasma.
Centrifuge sample and separate plasma from cells within 2
hours of collection. Transfer plasma to a plastic transport
tube. Clearly label tube as heparin plasma. Freeze.
Critical Frozen (CFZ). Protect sample from light during
collection, storage and transport. When multiple tests are
ordered, submit separate tube for this test.
Patient should be fasting prior to collection.

Alternative Specimen

2 mL serum from a plain red top tube. Allow sample to clot in an upright position for at least 60 minutes, then centrifuge sample and transfer serum to a plastic transport tube within 2 hours of collection. Clearly label tube as serum from a plain red top tube. Freeze.