Review of diagnostic services offered by molecular genetic laboratories classified according the number of laboratories dealing with individual diagnoses is presented. Three different categories were distinguished: frequently, medium and rarely offered diagnostic service. Services that concerned trombophilic factors F2 a F5 and methylentetrahydrofolatreductase, cystic fibrosis, paternity testing, gender determination, molecular testing for hemochromatose - HFE, detection of BCR/ABL fused gene, and Y-chromosomal loci DAZ and AYF examination were most frequently offered.

        Key words: molecular genetic testing services in Czech Republic, most frequently and rarely offered services.