Therapeutic drug management
Serum or plasma
Trough levels are most reproducible.
Serum or plasma should be separated from cells within two hours of venipuncture. Submit serum or plasma in a plastic transport tube.
Red-top tube or green-top (heparin) tube. Gel-barrier tubes not recommended.
Room temperature. For storage beyond three days, specimen should be refrigerated or frozen.
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7018 South Utica Avenue
Tulsa, Oklahoma 74136