Collect
Collect blood in an 8-10 mL plain green top tube.
An 8-10 mL red top tube is also acceptable for this assay, but not preferred.
Specimen Preparation
Separate plasma (or serum) from cells immediately by centrifuge and aliquot into a labeled polypropylene or similar plastic tube.
Use a separate tube for each test ordered. Allow room for expansion of sample.
Freeze at -70°C if possible, but at minimum -20°C.
Preferred volume: 2 mL of plasma (or serum)
Pediatric Collection
Minimum volume: 0.5 mL plasma (or serum)
Unacceptable Conditions
Turbidity, particulate matter, multiple freeze/thaw cycles, thawed samples for greater than 24 hours
Storage Transport Temp
Fully complete PK requisition, including drug dose amount, frequency, method, and date and time of last dose prior to draw.
Ship samples via overnight delivery on >3 lbs of dry ice.
Stability
Up to 24 hours at room temperature. Thereafter, freeze at -70°C if possible, but at minimum -20°C.
Notes
Ship samples to be received Monday through Friday. Do not ship on Friday or Saturday. For shipping and detailed collection instructions, click here.