Lab reference

Theophylline Level

Drug Levels

For education. Check every result.

Anatium is a study resource, not medical advice. Nothing here is a diagnosis, a prescription or a substitute for a clinician who has seen the patient. Check every number against a current local protocol before it touches anyone, and never act on a result you cannot reproduce yourself.

Reference range

Range10 to 20 mg/L

About

Serum theophylline, monitored because the gap between an effective and a toxic level is narrow and many drugs alter its clearance.

When it is low

Subtherapeutic bronchodilation

When it is high

Narrow therapeutic index: nausea, tachyarrhythmia, seizures. Ciprofloxacin, erythromycin and cimetidine raise levels

The rest of Anatium

Lessons, flashcards, condition modules, the anatomy lab, clinical cases and the AI study assistant are free, and need an account.

Request access