Summary
A good quality assurance system ensures that a product will be safe and suitable for the intended use. Quality control is an important part of the quality assurance system. Two main topics are discussed in this paper:
1. General aspects including regulations, possibilities, economics and responsibility; and
2. Procedures: Methods for the determination of the physical, chemical, pharmaceutical and biological purity with special regard to new methods, problems and pitfalls, e.g.
– the measurement of radioactivity using an isotope calibrator;
– the radionuclidic purity of 123I;
– alpha and beta-emitting impurities in 99mTc;
– High-performance liquid chromatography (HPLC);
– Mini-chromatograms; and
– the value of animal tests.