Question: A 7-year-old patient is being treated for ADHD with atomoxetine. However, even at very low doses, he complains of side effects including dry mouth, loss of appetite, and insomnia. The child's mother gives his medication every morning and confirms proper compliance with the prescribing instructions. He does not take any other prescribed or OTC medications and has no significant past medical history. The child has a history of sensitivity to the side effects of some medications but not all. Which of the following measures would clearly establish the diagnosis? Need Assignment Help?
Question options:
- Creatinine clearance
- Liver function tests
- Genotyping
- Urine toxicology