title: [The Offer of Medical-Diagnostic Self-Tests on German Language Websites: Results of a Systematic Internet Search].
abstract: OBJECTIVE
  The aim of the current study was to provide an overview of medical-diagnostic self-tests which can be purchased without a medical prescription on German language websites.
  
  
  METHODS
  From September 2014 to March 2015, a systematic internet research was conducted with the following search terms: self-test, self-diagnosis, home test, home diagnosis, quick test, rapid test.
  
  
  RESULTS
  513 different self-tests for the diagnostics of 52 diverse diseases or health risks were identified, including chronic diseases (e. g. diabetes, chronic disease of the kidneys, liver, and lungs), sexually transmitted diseases (e. g. HIV, chlamydia, gonorrhea), infectious diseases (e. g. tuberculosis, malaria, Helicobacter pylori), allergies (e. g. house dust, cats, histamine) and cancer as well as tests for the diagnostics of 12 different psychotropic substances. These were sold by 90 companies in Germany and by other foreign companies.
  
  
  CONCLUSIONS
  The number of medical-diagnostic self-tests which can be bought without a medical prescription on the Internet has increased enormously in the last 10 years. Further studies are needed for the identification of the determinants of the use of self-tests as well as the impact of the application on the experience and behavior of the user.
authors.affiliation: Institut für Psychologie, Ernst-Moritz-Arndt Universität Greifswald, Greifswald.
authors.forename: P
authors.initials: P
authors.lastname: Kuecuekbalaban
authors.affiliation: Institut für Psychologie, Ernst-Moritz-Arndt Universität Greifswald, Greifswald.
authors.forename: S
authors.initials: S
authors.lastname: Schmidt
authors.affiliation: Institut für Psychologie, Ernst-Moritz-Arndt Universität Greifswald, Greifswald.
authors.forename: H
authors.initials: H
authors.lastname: Muehlan
mesh_terms: D000818:Animals; D002415:Cats; D005858:Germany; D006967:Hypersensitivity / Q000175:diagnosis; D007239:Infections / Q000175:diagnosis; D020407:Internet; D007802:Language; D009369:Neoplasms / Q000175:diagnosis; D012648:Self Care; D012749:Sexually Transmitted Diseases / Q000175:diagnosis