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Test Code VB6 Pyridoxal 5-Phosphate, Plasma

Important Note

Centrifuge at 4° C within 2 hours of collection, then aliquot all plasma into amber vial.

If refrigerated centrifuge is unavailable, chill the centrifuge carriers.  Centrifuge specimen and then promptly transfer plasma into amber vial (or light protected tube).

Freeze plasma immediately. 

 

Additional Codes

Mayo Code
PLP
EPIC Code
LAB120
Sunquest Code
VB6

 

Useful For

Determining the concentration of pyridoxal 5-phosphate in the assessment of vitamin B6 status

Reporting Name

Pyridoxal 5-Phosphate (PLP), P

Specimen Type

Plasma Heparin
Bronson Laboratory Services Note:

Plasma Separator Tube (PST) gel tube is acceptable for this test per Kim Terrio, Mayo technical specialist.


Shipping Instructions


Ship specimen in amber vial to protect from light.



Specimen Required


Patient Preparation:

1. Patient should fast overnight (12-14 hours); infants-should have specimen collected before next feeding. Water can 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: Green top (sodium or lithium heparin) or plasma gel separator (PST)

Submission Container/Tube: Amber vial

Specimen Volume: 1 mL

Collection Instructions:

1. Centrifuge at 4° C within 2 hours of collection.

2. Aliquot all plasma into amber vial and freeze immediately.


Specimen Minimum Volume

0.75 mL

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

5-50 mcg/L

Day(s) Performed

Monday through Thursday, Saturday, Sunday

Report Available

1 to 7 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.

CPT Code Information

84207

LOINC Code Information

Test ID Test Order Name Order LOINC Value
PLP Pyridoxal 5-Phosphate (PLP), P 30552-4

 

Result ID Test Result Name Result LOINC Value
4047 Pyridoxal 5-Phosphate (PLP), P 30552-4

Forms

If not ordering electronically, complete, print, and send a General Request (T239) with the specimen.