PHENOBARBITAL

Test Code

PHENO (OE), PHNO (LAB)

CPT Codes
80184

Preferred Specimen

1 Red tube

Patient Preparation
Dosage stable to 18 days

Minimum Volume

0.5 mL (1 mL optimal)

Other Acceptable Specimens

1 Lavender tube (EDTA)

OR

1 Green tube (Lithium Heparin)

Instructions

Centrifuge for complete separation of serum or plasma from red cells. Refrigerate until tested.

Transport Container

Transfer/aliquot tube

Transport Temperature

Refrigerate

Specimen Stability

2-8°C up to 7 days
Frozen up to 3 months

Methodology
EIA

Setup Schedule

M, T, W, Th, F, Sa, Sun

As received; STAT testing is available

Reference Range

10-40 ug/mL

Clinical Significance

Phenobarbital levels are monitored to assure adequate therapeutic levels are achieved and to avoid toxicity.

Performing Laboratory
Alverno Central Lab

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.