LungCanSeek® test, a blood-based, non-invasive, and cost-effective solution for lung cancer early detection. In a study of 1,814 participants (1,095 with lung cancer and 719 without cancer) from three cohorts, LungCanSeek showed 83.5% sensitivity and 90.3% specificity by combining artificial intelligence (AI) algorithms with four protein tumor markers (PTMs). Moreover, LungCanSeek can also predict the possible histological subtypes. With a 77.4% subtype classification accuracy, it could offer valuable guidance for subsequent diagnosis and treatment.