Answer
Yes. Concentrations must be interpreted with symptoms, ECG findings, renal function, electrolytes and thyroid status because individual sensitivity varies.
Sources for this answer
- Digoxin 250 micrograms tablets — Current selected SmPCemc · Summary of Product Characteristics
- NHS Specialist Pharmacy ServiceNHS Specialist Pharmacy Service · NHS medicine guidance
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.