THEOPHYLLINE

Message

Collect as a trough just prior to next dose.

Test Code

LAB35

CPT Codes
80198

Preferred Specimen

One 6 mL red top tube
Pediatric: One red top microtainer

Other Acceptable Specimens

Dark green top tube

Instructions

Sample must be centrifuged within two hours of collection. Serum/plasma (red and dark green top tubes) must be removed from the red cells and put into aliquot tubes following centrifugation.

Transport Temperature

Refrigerated

Specimen Stability

Unstable, centrifuge within two hours of collection
Ambient: 2 days
Refrigerated: 3 months
Frozen: 3 months

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Specimens drawn in tubes containing a separator gel will be rejected. The separator gel may cause falsely lower results.

Methodology
Immunoturbometric

Setup Schedule

Sunday-Saturday

Reference Range

Therapeutic level:
0-6 months: 5.0-10.0 ug/mL
6 months and older: 10.0-20.0 ug/mL
Toxic level: >=20.1 ug/mL

Performing Laboratory
West Virginia University Hospital, Inc.
Berkeley Medical Center
Braxton County Memorial Hospital
Camden Clark Medical Center
Potomac Valley Hospital
Summersville Regional Medical Center
St Joseph's Hospital
United Hospital Center

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.