Man's routine blood test catches deadly colon cancer with zero symptoms Ian Ferguson, 37, had no symptoms when he got standard bloodwork that led to his cancer diagnosis. Now, he is sharing his story to encourage others to get screened. NEW You can now listen to Fox News articles! An increasing number of patients are requesting "unvaccinated" blood for transfusions, which can delay care and pose risks to patients’ health, experts warn. There is no evidence that unvaccinated blood presents any