3 hour glucose values

Mandy
Hey! Any experts know where I can find the scale for the 3 hour test? I googled it but the numbers don't line up with my testing values so I'm confused. 
My numbers:
Fasting 79
Draw 1 140
Draw 2 150 (high)
Draw 3 125 (high)
I failed due to draw 2 and 3 being over the limit but the standard chart I found online show these to be within range. Is there a different test? 
Side note my doctor thinks the lab messed up my samples and 2&3 should be swapped. So I have to go through with the glucose meter and food log because potentially of a lab mistake. 🙄 better safe than fat baby.