Abstract In the Netherlands, the Sense program addresses several key elements of sexual health for young people <25 year. This program offers free consultations at the PHS concerning STI, contraceptives, pregnancy or sexuality. The performance of this program has not been studied yet. This mixed methods study investigates facilitators and barriers of a Sense consultation from the perspective of clients and health care professionals (HCP) and investigates the outcome of the consultation at three points in time. Semi-structured interviews were conducted after consultation among 16 clients and 6 HCP. Questionnaires were collected directly after consultation and at 3, 6 and 12 months after consultation. Two cohorts were recruited; clients with STI consultation only and clients with questions related to sexuality, contraception and pregnancy (Sense consultation, SC). Satisfaction of the consultation and applicability of the given advice was measured. In the follow up presence of STI, pregnancy, sexual problem and contraceptive use was measured. A minority of the interviewed clients were familiar with Sense, highly valued the expertise of the HCP and the open atmosphere during the consultation. Reasons for visiting Sense included expertise, more anonymity and feeling more comfortable than at the GP. The questionnaire after consultation was returned by 144 STI clients and 32 SC clients. Both type of consultation were highly valued and advice was easily applicable. The follow up cohort included 97 STI clients and 23 SC clients. Response rate of the 3- and 6 month-questionnaires was 61%. Results of the full one year follow-up are expected in September 2019. Study results provide evidence for a highly valued Sense program, by both clients and HCP. Sense is a platform to discuss STI, contraception and sexuality in an open atmosphere, though familiarity with Sense is low. A major conclusion is that an STI consultation provides the opportunity to address questions related to sexuality. Key messages The Sense program ...