CFR › Title 21 › Part 892 › §892.136021 CFR §892.1360Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy link(a)Identification. A radionuclide dose calibrator is a radiation detection device intended to assay radionuclides before their administration to patients.(b)Classification. Class II.