[Indications for testing for sexually transmitted Chlamydia trachomatis infections].

Laboratory testing for sexually transmitted Chlamydia trachomatis infection is widely used in Norwegian general practice. The yield of this testing is declining, since the prevalence of infection in the community has decreased. Thus, the cost-effectiveness of testing is reduced, and the risk of false positive results using non-culture methods has increased. In cooperation with a panel of medical microbiologists, gynaecologists, venerologists, general practitioners and public health specialists, we have reviewed the literature and drawn up a set of recommendations for the use of laboratory testing for genital C. trachomatis infection. We emphasize clinical testing of men and women, notification of partners in order to reach males, and screening of women under the age of 25 after each change of sexual partner.