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HelpTest Code PLP Pyridoxal 5-Phosphate, Plasma
Secondary ID
42359Method Name
Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Specimen Type
Plasma HeparinShipping 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 should 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.
2. Aliquot all plasma into amber vial and freeze immediately.
Offsite Collection Instructions:
NO Vitamin supplements 24 hours prior to collection.
Centrifuge at 4° C, then aliquot all plasma into amber vial to protect from light.
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
2 to 7 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
84207
Forms
If not ordering electronically, complete, print, and send a General Request (T239) with the specimen.