The determination of GLO types was carried out using two methods: on high voltage agarose gel and cellulose acetate foil. In the sample of the Polish population including 201 persons, three GLO types were encountered with the following frequencies: GLO 1-1 0.2438, GLO 2-1 0.4477, GLO 2-2 0.3035. Frequencies of GLO1 gene was 0.4726, GLO2 0.5724.