A Comparison of Websites Offering Laboratory Test Information Targeted to Citizens

Laboratory (lab) tests can assist diagnosis, treatment, and monitoring illness and health. Lab results are one of the most commonly accessible types of personal health information, yet they can be difficult for consumers (e.g., patients, laypeople, citizens) to understand. Consequently, many consumers turn to digital educational resources (e.g., websites, mobile applications) to make sense of their tests and results. In this study, we compared the understandability and readability of four different consumer targeted webpages with information about a commonly ordered blood test called the Complete Blood Count (CBC). The webpages varied in terms of understandability, and only one met the threshold. None of the web pages provided any information about how to respond to lab results. Although all four webpages were quite readable, some were much longer than others. The length of webpages may impact users' attention, ability to locate information, and determine what is most important. Future work is warranted to better understand users' information needs and the usability and user experience of these types of websites.