Well, before I had called them back (or was waiting for them), I'd researched it and the range said 200-600 and that cancers started being higher in the 800 range. My number was 1018 (and with a type of leukemia running in my family, you can see why I was a bit panicked). Then I read all sorts of ranges. Then the clinic called and said the top range was 1000 and so I was only 18 points over. How can things differ so?