[Laboratory tests in The Child and Adolescent Health Survey].

Laboratory tests will be performed as part of the National Health Survey for Children and Adolescents to identify health risks and to determine the seroprevalence of disease markers. The parameters were selected from haematology, clinical chemistry, allergology, endocrinology and serology of infectious diseases as indicators of individual health risks, to validate information collected by means of the questionnaires and to identify age specific immunity gaps of vaccine-preventable diseases.