Abstract: This article details how an individual family planning nurse's practice concerning opportunistic testing for sexually transmitted chlamydia was improved through an audit of her testing rates and reflection on the outcome. The leading curable sexually transmitted infection in New Zealand, chlamydia, (including the incidence and spread of the infection and why it is a public health issue) is discussed, and the audit examined. The first audit of fifty consecutive client visits exposed a lack of opportunistic testing. The second looking at a similar but more recent group of client visits, made after the results of the first (zero opportunistic testing) were known, shows an increase in testing and education about chlamydia. Important clinical issues concerning chlamydia testing and treatment are considered. In conclusion the article challenges other nurses in the community to take a lead in raising awareness of the consequences of undiagnosed chlamydial infection and find ways of increasing opportunistic testing for chlamydia within their practice.