Oh about testing, what I meant was a blood sugar testing machine with strips. I bought one for about $20 and found strips for about $8. You prick your finger and drop a spot of blood on the strip, enter the strip into the little machine and presto, your blood sugar is measured.
It fluctuates throughout the day and maybe for a couple of days you can test several times throughout the day and log it to see if there is a pattern throughout the day.