The aim of the study was to evaluate reasons for anti-HIV testing among persons admitted to Outpatient Counseling Unit. Serum examination for antibodies against HIV were performed in 389 persons during 8 years of the Unit activity. The most frequently it was analysed in intravenous drug users. However there are still many persons who are urged for this analysis before invasive medical procedures. Knowledge on HIV/AIDS in Poland seems to remain on the very low level in public as well as in medical staff.