It was suggested that anticardiolipin antibodies (ACA) were found positive in some obstetrical problems such as recurrent foetal losses, intrauterine growth retardation, etc. The aim of this study was to determine ACA levels in pregnancy induced hypertension (PIH) cases. ACA IgG and IgM levels were measured by the ELISA method in 65 PIH cases and 23 control pregnancies. We could not find any difference between the PIH and the control groups. There was not any statistically significant difference between the subtypes of PIH. According to these results, we say that ACA IgG and IgM levels have no diagnostic and prognostic value in PIH.