In summary, compared to their counterparts, participants who knew that the PSA test was a blood test had significantly higher K1, K2, K3, and satisfaction scores; participants who reported a history of receiving the PSA test had significantly higher K2, confidence, and self-efficacy scores; and participants who had a family history of prostate cancer reported higher K1 and K3 scores. The gene discussed is KLK3; the disease is prostate cancer.