THEOPHYLLINE

Test Code

THEO (OE), THEOP (LAB)

CPT Codes
80198

Preferred Specimen

1 Red tube

Minimum Volume

0.2 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. Aliquot serum or plasma into transfer tube. Refrigerate until tested.

Transport Container

Transfer 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, Su

As received; STAT testing is available

Reference Range

5 - 15 ug/mL

Clinical Significance

The test is used in the treatment of bronchial asthma as well as in the treatment of chronic obstructive pulmonary disease and episodes of prolonged apnea in pre-term infants. Theophylline 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.