The United Kingdom blood testing market size is the ecosystem of services, technology, and products involved in the collection, analysis, and interpretation of blood samples for medical diagnosis, disease monitoring, and preventative healthcare across the UK. To manage chronic disorders, identify infections, screen for cancer, and evaluate general health, blood testing is a fundamental component of clinical decision-making. The market provides both routine and customized assays to NHS hospitals, private clinics, diagnostic labs, and remote or at-home testing providers.