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Test Code PTN Phenytoin, Serum

Clinical Indications

N/A

Additional Test Codes

Epic Order Name: Phenytoin, Total (Dilantin) (PTN)
Sunquest Order Code: PTN
Epic Px Code: LAB2421

Specimen Collection Type

Preferred: Mint
Acceptable: Gold

Minimum Collection Volume

1 mL whole blood

Reference Range

10.0 – 20.0 ug/mL

Critical Value

>30.0 ug/mL

Interpretation

N/A

Rejection Criteria

Gross Hemolysis

Specimen Availability for Add-on Testing

2 Days

Specimen Stability

30 Days Refrigerated

Day(s) Performed

Monday through Sunday

Performing Lab- Department

TUKHS-BH-Chemistry

CPT Code

80185

LOINC Code

3968-5

Test Alias

Dilantin

Additional Information / Notes

Specimens collected in a serum gel tube or lithium heparin gel tube must be centrifuged within 3 hours of collection. Serum gel should clot for 30 minutes prior to being centrifuged.