Theophylline

1 x 5 mL light green (mint) top PST tube.  Gold top SST tube is also acceptable.

Minimum Blood Volume for Patients less than 45 kg (100 lb) Including Neonates and Pediatrics

COLLECT specimen 0-60 minutes prior to next oral dose.

For IV dosing, collect 30 minutes after completion of loading dose and 4-6 hours after beginning infusion.

RECORD time of last dose on requisition.

For additional information, see Half-life and time to Steady State.

Therapeutic range:

0-31 days	25.0-110-0 mmol/L
32 days – 150 years	55.0-110.0 mmol/L

Theophylline Stimulation Range 0 - 1 year: 33.0 - 55.0 mmol/L

Click here for critical values.