You would check it before each shot and then 30 mins later. Get a glucose reader at the pharmacy.
Cool, I picked one up today and tested about 2 hours after consuming glucose and I was normal. High end of normal but still normal (not early onset "high"). It was 96 dl/ml or however it goes..... Oh shit I just noticed you said before and after the shot so I'll have to retest tonight before bed. Thanks for the help.