Updated Test

Effective Date

08/09/2022

Updated Test

PHENYTOIN, FREE

Notes

Update to alternate specimen and stability.

Alternate Specimen: Plasma: EDTA, sodium or lithium heparin, oxalate, citrate

Stability:

Room temperature: Unacceptable
Refrigerated: 30 days
Frozen: 3 months 

Test Details

Mnemonic

PHNYF

Ordering Code

1750052

CPT-4 Codes(s)

80186