The 13C, 19F NMR spectra of the initial and irradiated polytetrafluoroethylene samples were studied in the range of gamma radiation doses up to 50 kGy. In this range, the 19F NMR spectrum width increases linearly with an increase in the absorbed dose. It is concluded that it is possible to control technological doses by the NMR method using polytetrafluoroethylene as a detector.