I think the reason that they send a letter is to provide a warning shot. Maybe for some people, opening a box for a bowel screening test might be a bit alarming. The uptake is so poor now; they do all they can to warn, prepare and encourage people beforehand.
There will always be some people who sadly have false negative results, but still a test well worth having.
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If heaven is so wonderful, why do people pray to stop someone going there


