Test/Investigation
Phenytoin
Site(s) or Laboratory offering Test/Investigation
NNUH
Units
mg/L
Comments/Precautions
Check for toxicity and compliance.
Sample type
Serum
Turnaround times (TAT) Urgent/Routine/GP or OPD
1 hour / 4 hour / by 8am next day
Reference intervals (adult unless stated)
5 – 20 mg/L
If UKAS Accredited Test indicate at which site
Y NNUH
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