EN
The study of blood serum for the content of Mg, K, Ca, Na, P and CI in blood serum was carried out on 47 healthy controls, 121 mentally handicapped, 27 psychiatric and 14 suffering from different somatic diseases. The patients were from Lublin, Zamość, Zwierzyniec, Krasnystaw, Łabunie, Ostrów Krupski. The study was carried out using atomie absorption spectrometer type Cobas Mira in the Central Laboratory of State Children's Hospital in Lublin. The results of the study revealed positive correlation between Mg and Ca in 47 healthy controls, similar correlation between Mg and K, Mg and P. In 162 patients correlation between Mg and P, and between Ca and P was also positive.