recently i have taken blood test for pp on 24/9/2015. it was 132. again on 30/9/2015 and the result is 201. again on 01/10/2015 the result was 126. i have taken these tests in three different labs. why there is such a variation? which reading i must take into account? this is the first time the reading shows a high of 201. i don"t take any medicines so far for diabetes. i am 79+. can any one clear my doubts?