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Test Code DIL Phenytoin, Total, Plasma or Serum

Additional Codes

Ordering Mnemonic
DIL

 

Methodology

Homogeneous enzyme  Immunoassay

Performing Laboratory

Holland Hospital Laboratory Services

Specimen Requirements

Submit only 1 of the following specimens:

 

Plasma

Container/Tube: Mint-top (lithium heparin) tube

Specimen Volume: 1 mL of plasma

Collection Instructions:

Trough - Draw 30 minutes before AM dose.

Peak - Draw 2-4 hours after an intravenous loading dose.

Note: 1. Indicate plasma.

2. Label specimen appropriately (plasma).

 

Serum

Container/Tube: Serum gel tube

Specimen Volume: 1 mL of serum

Collection Instructions:

Trough - Draw 30 minutes before AM dose.

Peak - Draw 2-4 hours after an intravenous loading dose.

Note: 1. Indicate serum.
2. Label specimen appropriately (serum).

Specimen Transport Temperature

Refrigerate

Day(s) Test Set Up

Monday through Sunday

Available STAT

Test Classification and CPT Coding

80185 (HH Bill Code 0205048)

Reference Values

Therapeutic concentration: 10-20 µg/mL

Toxic concentration (automatic call-back): ≥30 µg/mL