Petition for Exclusive Authority to Give Consent for Medical Treatment (GC-380) Ask the court for permission and issue Letters to allow a conservator to give consent for medical treatment for a conservatee. Get form GC-380 Effective: January 1, 2019 View GC-380 Petition for Exclusive Authority to Give Consent for Medical Treatment form Go to How-to instructions for Conservatorship Go to Conservatorship Form Packets