Answer
Testing can detect changes in blood cells, kidney or liver function and electrolytes, particularly during prolonged treatment or in higher-risk patients.
Sources for this answer
- Co-Trimoxazole 80 mg/400 mg Tablets — Current selected SmPCemc · Summary of Product Characteristics
- NHSNHS · NHS medicine guidance
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.