Stockport Pathology

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InvestigationPhenytoin
IndicationsTo determine pheytoin concentration in the blood and to ensure it is at an approriate level to avoid phenytoin toxicity.
Specimen TypeOchre/Yellow top
Request FormBlood Sciences or Electronic
VolumeFill to line
Turn around time for final test2 days
Uncertainty of testingSample Pre Dose, refer to therapeutic drug ranges in `The Guide`.
Reference range5.0 - 20.0 mg/L
Action limitsAbove 25 mg/L
Appropriate testing /re-testing interval2 days
Related testsNone
HOW TO guidesNone
Information leafletsNone
PublicationsNone
GuidelinesNone