Technetium 99m is a metastable artificial radioisotope used as a radiotracer with advanced and plenty applications in Nuclear Medicine. It is the decay product (daughter element) of Mo-99 following beta decay with half life of 6.03 hours in its metastable state. It has properly physical and chemical characteristics and thus plays a lead role in radiopharmaceutical industry. Under appropriate conditions such as oxidation number, pH, hydrophilic characteristics can produce multiple stable complexes applicative to participate in almost any physical or metabolic pathways to identify a disease or pathological conditions.