Method Name



Theophylline; Aminophylline Level; Elixophyllin, Theophylline Level

Specimen Required

one SST/gel tube. Draw specimen prior to next dose. Peak sample is approximately 2 hours after oral dose.

Specimen Minimum Volume

1.0 mL of blood

Specimen Stability Information

Centrifuged specimen stable for 72 hours refrigerated.

Special Instructions

Patient should be at a “steady state” concentration.

Performing Laboratory

As ordered. Turn around time is 4 hours.

Reference Values

10 – 20 ug/mL