You can revoke a medical release form after signing it. Follow these steps, or the instructions given to you by appropriate legal or professional counsel to enact a revocation:   ᐅ Create a written statement that explicitly says you intend to revoke the medical release form ᐅ Add an effective date ᐅ Sign the revocation statement ᐅ Deliver the revocation statement to all relevant parties, like your healthcare providers, schools, and anyone else that has a copy of the original form ᐅ Keep a copy of the revocation statement with your records. The revocation is effective from the date it is delivered, but it may take some time for the revocation to be fully implemented. During this period, it is crucial to maintain open communication with authorized adults and healthcare providers.