CAFFEINE

Test Code

LAB706

CPT Codes
80299

Preferred Specimen

Serum collected in a plain red top tube.

Minimum Volume

0.5 mL

Instructions

Sample Collection Time: Note: The patient’s clinical condition and dosage regimen may influence the sample collection time. 1. Patient receiving Theophylline Intravenously: a. Measure 30 minutes after completion of intravenous loading dose b. Measure 4-6 hours after initiation of a constant rate infusion c. Repeat measurement 12-18 hours after initiation of a constant rate infusion d. Repeat measurement at 24-hours intervals unit infusion is discontinued 2. Patient receiving Theophylline Orally: a. Measure trough concentration immediately before the next dose b. Measure peak concentration according to the following: c. Solution or uncoated tablet: 2 hours after oral dose d. Slow-release formulations: 4 hours after oral dose 3. Patient receiving Caffeine Therapy: a. Prior to dosing patients with caffeine, baseline serum levels of caffeine should be measured for: 1. infants born to mothers who consumed caffeine prior to delivery 2. infants previously dosed with theophylline

Transport Container

Plain Red (7RD)

Transport Temperature

Refrigerated

Methodology
EMIT

Setup Schedule

Set Up:Daily Report Available:1 day

Reference Range

Caffeine

5.5 - 16.2 ug/mL

Performing Laboratory
GBMC Chemistry

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.