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This study presents the results of performance evaluations of the Cell-Dyn Sapphire (CD-Sapphire) undertaken by 3 study sites in Europe. These studies focused on the routine blood count analyses with specific consideration of precision and imprecision, linearity, inter-instrument correlations, and white blood cell differential and flagging efficiencies. The CD-Sapphire was compared to the Cell-Dyn CD4000, Bayer Advia 120, Beckman Coulter GenS, and reference microscopy.

BackgroundPain problems are a rapidly growing health problem found among both children and adolescent, and about 15–30% have reported chronic pain problems. School nurses in Norway meet adolescents with various ailments, including pain. Yet research on how school nurses perceive the pain experienced by adolescents is limited. The aim of the present study was to explore how school nurses explain and experience the everyday pain of adolescents.MethodA qualitative study with an explorative design comprising five focus group interviews. Each group consisted of three to five school nurses. Seventeen female school nurses in five junior high schools in Norway, age range 29–65 years participated. To cover the issues a semi structured interview guide was used. The transcribed text was analysed with qualitative content analysis.ResultsThe experience of school nurses with adolescents’ pain in everyday life is mainly that pain is a social, physical, and psychological phenomenon. School nurses experienced that everyday pain is reflecting: 1) high expectations, 2) difficult relationships and traumatic experiences and 3) an unhealthy lifestyle. School nurses have ambivalent attitudes to medicalisation of pain.ConclusionDespite of a biopsychosocial understanding of pain, the school nurses maintained referral practice of medical examinations, with the results that many adolescents became shuttlecocks in the health system. Although the school nurses´ were sceptical of the tendency towards medicalization in society, it appears that they actually help maintain this tendency.

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Blood processing centres should establish correction factors for each instrument compared to reference methods, such as the immunoplatelet count.