Liquid Chromatography-Tandem Mass Spectrometry (LC/MS/MS)
Piperideine-6carboxylic acid (P6C); Pyridoxine Dependent Epilepsy; Alpha Aminoadipic Semi Aldehyde
Seattle Children's Biochemical Genetics
Other Reference Test
1-2 mL Blood
Dark Green (Sodium Heparin)
Whole blood collected in a lithium heparin (green-top) tube is also acceptable.
Room Temp: 1 Hour; Refrigerated: 1 Hour; Frozen: 6 Months
1 mL Plasma
0.5 mL Plasma
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.