Laboratory Services

Phenytoin (Dilantin)

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Updated Test Information:

Test Description
Phenytoin (Dilantin)
Synonym(s)

Dilantin, Diphenylhydantoin, DPH, UOW1257

Test ID
DIL
General Information

Phenytoin Level

Container Type

SST

Specimen Type

Serum

Specimen Requirements

1 mL

Alternate Specimen Type

Mint PST, Red Top, Lav Top or Green Top

Specimen Collection / Processing Instructions

Serum/Plasma must be centrifuged and aliquoted to a plastic tube within 24 hours of collection

Minimum Sample Volume

0.5 mL

Pediatric Min. Volume (if applicable)

1 full Mint Microtainer

Additional Processing Details

Freeze and thaw only once

Stability

Frozen, Refrigerated 24 hours

Unacceptable Specimen Conditions

Hemolysis

Methodology

Enzyme Multiplies Immunoassay technique (EMIT)

Estimated TAT

2 Days

Testing Schedule

Daily

CPT Code(s)

80185

Reference Range

Units: mcg/mL

Female
Age           Range
0-         10.0 - 20.0


Male
Age           Range
0-         10.0 - 20.0

STAT Orderable (Y/N)

No

Performing Lab

UW

LOINC Code(s)

3968-5