Answer
Small translucent-to-white protein particles can be normal. Do not use the syringe if the solution is cloudy, discoloured or contains other particles.
Sources for this answer
- Kineret 100 mg solution for injection in a pre-filled syringe — Current selected SmPCemc · Summary of Product Characteristics
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.