Test Code PTN Phenytoin (Dilantin)

Performing Laboratory

Hunterdon Medical Center Laboratory

Specimen Required

Container/Tube
Acceptable	PST (Li Hep) Gel- Mint Green Top
Acceptable	SST
Specimen Volume	3.0mL
Minimum Volume	1.0mL

Specimen Type

Plasma/Serum

Specimen Transport Temperature

Ambient

Specimen Stability

Specimen	Temperature	Time Frame
Plasma	Refrigerated 2-8°C	4 days
Serum-gel tube	Refrigerated 2-8°C	4 days

Updated June 2020

Reject Specimen Due To

Hemolysis

Day(s) Test Set up

Monday through Sunday

Available STAT

Reference Values

Therapeutic concentration: 10.0 - 20.0 µg/ml

Methodology

Kinetic interaction of microparticles.

CPT Code

80185

Loinc Code

3968-5