By using its technical, methodological, and intellectual potential, the Laboratory of Biochemistry is ready for cooperation with scientific and technological units in the development of new products or looking for other means of application of the existing products. We are able to use the following biological material as samples: blood and blood components, saliva, other biological liquids, tissue material, as well as plant extracts and essences. The current study conception includes measuring of oxidative stress, active forms of oxygen and nitrogen, free radicals and assessment of consequences of their impact. Research in the field of various antioxidants. Abilities and potency of antioxidant defence by using natural nature products.