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Test & Collection Guide

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Phenytoin

Alternate names:
anticonvulsant, Dilantin, PTN
Laboratory:
Biochemistry
Test Code:
PHENY
Specimen types:
Serum
Container types:
Serum tube with gelSerum tube with gel
Collection Instructions:
Transport specimen at Room Temperature to lab

Pre-dose collection required

Minimum Adult Volume:
2 mL
Frequency:
Daily
Result Turnaround Time:
4 hours
Reference Interval:

10-20 mg/L

Please note, as of 13th December 2023, Phenytoin is being reported in mass units.

To convert the mass units back to molar units, please multiply as below:

Phenytoin (mg/L) x 0.252 = Phenytoin (umol/L)

Pathology Handbook

Test & Collection Guide

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