Serum or Plasma
1 mL Blood (0.6 mL Blood for infants collect in a (green-top) microtainer)
Light Green (Lithium Heparin PST)
Collect just before next dose. Plasma collected in an EDTA (lavender-top) tube or serum collected in a (red-top) tube is also acceptable.
Room Temp: 1 Day; Refrigerated: 7 Days; Frozen: 6 Months
0.5 mL Serum or Plasma
0.3 mL Serum or Plasma
This assay gives a combined result (Level Only) for the parent compound and the 10,11 expoxide metabolite.