Methodology
Liquid Chromatography-Tandem Mass Spectrometry (LC/MS/MS)
Synonyms
Piperideine-6carboxylic acid (P6C); Pyridoxine Dependent Epilepsy; Alpha Aminoadipic Semi Aldehyde
Specimen Type
Plasma
Performing Lab
Seattle Children's Biochemical Genetics
Epic ID
Other Reference Test
Lab Test Days
Monday-Friday
Standard TAT
7-10 Days
Collection Information
Specimen Required
1-2 mL Blood
Container Type
Dark Green (Sodium Heparin)
Collection Instructions
Whole blood collected in a lithium heparin (green-top) tube is also acceptable.
Processing Information - Lab Use Only
Transport Temperature
Frozen-Only
Specimen Stability
Room Temp: 1 Hour; Refrigerated: 1 Hour; Frozen: 6 Months
Test Volume Required
1 mL Plasma
Minimum Test Volume
0.5 mL Plasma
Processing Instructions
Separate plasma within 1 hour of collection and freeze immediately. Complete a Seattle Children's Biochemical Genetics requisition and submit with specimen frozen Monday-Thursday only, no weekends or holidays.
CPT Codes
82542
Revised
11-12-17
Initials
SL