[Determination of the normal limits of various biochemical parameters in a homogenous sub-population]

Within the limits of a program of preventive medicine for the people in working age we have gived started to a proceeding of methods' standardization and definition of the limits of the "normal" variability of any biochemicals parameters. The research, beginned how quality control (day to day control, between batch control, inter-laboratory control) for the instrumentation in use (Autoanalyzer SMA 12/60) is continued defining for 12 bio-chemical constants the normal bounds of the variability in relation with sex and age of the individual subjects and this in prevision of an enlargement of those bounds with the view of the preventing in the local people.