that's about right Yowie...there is a 1-1.5 m/mol margin of error on the testing machines and strips....it is just a limitation of the technology...if you read the pamphlet with the test strips it says something about this..... try not to get too hung about it or i does your head in. I know I can feel hypo sometimes when the bsl is reading around 4...do another test and get a 3.4 or something..... the technology is not perfect you just gotta go the best you can with the info you have.....