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Phenytoin, Free
Last Modified:
2/2/2022 7:12:55 AM
Medical Necessity Documentation:
Client Notes:
Patient Preparation:
Specimen Requirements:
2.0 mL Serum from a
Red Top Tube
in a Plastic Vial
Collection Instructions:
Should be drawn 2-4 hours after IV Dose, or just prior to next oral dose.
Minimum Volume:
1.0 mL
Transport & Storage: Temperature/Stability:
24 hours Refrigerated
24 hours on Cells
Rejection Criteria:
Serum Separator Tube (SST or PST)
Reference Range:
1 - 2 mcg/ml
Critical Ranges:
Test Comments:
Methodology:
Ultrafiltration, Immunoassay
Clinical Significance:
Documentation:
Custom Panel:
No
PRODUCTION SCHEDULE
Days Performed:
Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday
Sites Performed:
Parkview Regional Medical Center
PHL Test Code:
PHENF
EPIC Test Code:
LAB32
Alternate Test Names:
Dilantin, Free; Free Phenytoin; Phenytoin Level, Free
Included Tests:
CPT Coding:
80186
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