Red
Serum
1 mL
0.4 mL
Separate < 4hrs
Do not use separators or gels
REFRIGERATED
Samples should be drawn immediately before next oral dose
Samples from patients receiving fosphenytoin should be drawn at least 2 hours following IV administration per the recommendations of the manufacturer
The change in the phenytoin concentrations is dependent on the amount of time that has elapsed since the administration of fosphenytoin
Sun-Sat
Same day
Chemiluminescent Microparticle Immunoassay (CMIA) and Enzyme Immunoassay
Core
IHC
Dilantin
Dilantin, Total
Phenytoin, Total, Serum
Total phenytoin
Test
Separate from cells within 4 hours of collection
ug/mL
80185
3968-5
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