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Test Code PLPM Pyridoxal 5-Phosphate (PLP), Plasma

Additional Codes

MAYO Test ID
PLP
EPIC Test ID
LAB2819

 

Useful 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

Method Name

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

Reporting Name

Pyridoxal 5-Phosphate (PLP), P

Specimen Type

Plasma Heparin


Specimen Required


Patient Preparation:

1. Fasting-overnight (12-14 hours) (infants-draw prior to next feeding).

2. Patient must not ingest vitamin supplements for 24 hours before the specimen is drawn.

Supplies: Amber Frosted Tube, 5 mL (T192)

Collection Container/Tube: Green top (sodium or lithium heparin)

Submission Container/Tube: Amber vial (T192)

Specimen Volume: 1 mL

Collection Instructions: Centrifuge at 4° C, then aliquot all plasma into amber vial to protect from light.


Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time
Plasma Heparin Refrigerated (preferred) 7 days
  Frozen  14 days

Reject Due To

Hemolysis

Mild OK; Gross OK

Lipemia

Mild OK; Gross OK

Icterus

Mild OK; Gross OK

Other

NA

Reference Values

5-50 mcg/L

Day(s) and Time(s) Performed

Monday through Friday; 12:01 a.m.

Analytic Time

1 day

Performing Laboratory

Mayo Medical Laboratories in Rochester

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. 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 Form (T239) with the specimen (http://www.mayomedicallaboratories.com/it-mmfiles/general-request-form.pdf).