Answer
Contact the haemophilia treatment centre urgently. Alternative haemostatic treatment and assessment for neutralising antibodies may be needed.
Sources for this answer
- CEVENFACTA 1 mg (45 KIU) powder and solvent for solution for injection — 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.