I've got a blood testing kit from GP which is a MyLlife Pura but the test strips cost about £19 (Amazon). So I bought the Codefree SD meter as strips were considerably cheaper. However, when I was feeling as if I was becoming hypo this afternoon the Codefree was reading 6.0 whereas the My Life Pura read 3.6. Does anyone else have problems of higher readings with the Codefree SD system? I feel I should trust the meter that more closely matches how I feel.