Yale New Haven Hospital

Department of Laboratory Medicine
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Phenytoin level, total and free

Lab Section: 

Chemistry

 

Lab Location: 

Main Lab

Test ID: 

LAB176

 

Synonyms: 

Free Dilantin

Methodology: 

Immunoassay

Schedule: 

On Request

Reported: 

4 Hours Routine; 1 Hour Stats

Specimen Requirements: 

Collection: 2.0 mL Primary- Dark Green Li Heparin accepted only. NO GEL BARRIER TUBES
Pediatric volume: 0.5 mL.
Collection time required

 

Tests in this Panel: 

Test Name

Reference Interval

Phenytoin Total [LRR15572]

Age Limit

Sex

Normal Range

0 - 999 Years

Any

10.0

20.0 ug/mL

Phenytoin, Free [LRR15573]

Age Limit

Sex

Normal Range

0 - 999 Years

Any

1.0

2.0 ug/mL

CPT Code(s): 

80185, 80186

Last Changed: 

8/18/2017 12:57 PM

Last Reviewed: 

8/18/2017 12:57 PM