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PAK Test
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Microbiology Sources | Microbiology Tests | Anatomic Pathology | Cytopathology

Phenytoin, Free

Source

Blood

 
Mnemonic PTNFREE 
Specimen Requirements

2 x 5 mL gold top SST tube

Minimum 2.5 mL serum

 
Specimen Handling  
Additional Information Free Phenytoin is not performed when the total phenytoin
concentration is <10.0 or >80.0 µmol/L. 
Testing Location University of Alberta 
Testing Frequency Daily 
Alternate Name(s) Dilantin, Free; Free Dilantin; Free Phenytoin 
Reference Interval  


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