Laboratory Test DirectoryShare
Collect: Red Top Tube - 2 ml serum
Specimen Preparation: Collect trough just prior to next dose. For patients receiving fosphenytoin therapy, collect as peak (at least 2 hours after IV infusion or at least 4 hours after IM injection).
Separate serum from cells ASAP or within 2 hours of collection, transfer separated serum to a plastic transport tube.
Reject Criteria: Serum separator tube, plasma
Storage/Transport Temperature: Room Temperature
Stability: Room Temperature: 4 days; Refrigerated 1 week
Quest Diagnostics Nichols INST