I had blood work 4 weeks ago I still don’t feel good can cancer show up within 4 weeks of normal blood work I am 51?

Blood tests . Generally speaking routine blood tests don’t specifically screen or test for different types of cancer. If you have concerns about cancer, you should talk to your doctor about specific cancer screening tests including but not limited to a colonoscopy, or a mammogram or a Pap smear for females. Hope that helps! .