Could just be you: Reference ranges are set for couch-potatoes and if you're a well-muscled man, you'll have creatinine high, often above the normal. And ranges are set arbitrarily to have a few percent of healthies outside on either end. Keep managing your hypertension and don't worry so much about creatinine.
A standard chess board has 64 individual squares, but 204 squares if you count squares of all sizes. A regulation board consists of eight squares in each direction.
Looking at the differences in the number of squares in a 0, 1, 2, 3, 4, etc. sided board, I noticed the pattern 1, 4, 9, 16, ... Those are perfect squares, so all you have to do to find how many squares there are on an n sided board is add n^2 to the number of squares on an n-1 sided board.