Abstract: Batches of Radiopharmaceuticals made in the Radioisotope Department of IAE from Jan. 1986 to Aug. 1987 have been investigated in terms of radionuclidic purity. The determinations were made by HPGe γ-spectrometer and the data were acquired by PDP 11/24 computer. The results show the radionuclidic purity of the products agrees with the requirements of the Chinese Pharmacopoeia and the Chinese Ministry of Health.