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Test Catalog

Test ID: PNYFR    
Phenytoin, Total and Free, Serum

NY State Approved Indicates the status of NY State approval and if the test is orderable for NY State clients.


Useful For Suggests clinical disorders or settings where the test may be helpful

Monitoring for appropriate therapeutic concentration


Assessing toxicity

Profile Information A profile is a group of laboratory tests that are ordered and performed together under a single Mayo Test ID. Profile information lists the test performed, inclusive of the test fee, when a profile is ordered and includes reporting names and individual availability.

Test IDReporting NameAvailable SeparatelyAlways Performed
PHYFPhenytoin, Free, SYesYes
PNYTPhenytoin, Total, SYesYes

Method Name A short description of the method used to perform the test

PHYF: Membrane Separation/Immunoassay

PNYT: Immunoassay

Reporting Name A shorter/abbreviated version of the Published Name for a test; an abbreviated test name

Phenytoin, Total and Free, S

Aliases Lists additional common names for a test, as an aid in searching

Dilantin (Phenytoin)
Dilantin, Free
Free Dilantin (Phenytoin)
Phenytoin (Dilantin)
Dilantin, Total and Free