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

Alternate Specimen Type

Mint PST, Red Top, Lav Top or Green Top

Specimen Requirements

1 mL

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