Glucose Test

Random question, I took my glucose test today. Does your blood need to be drawn exactly 60 mins once you complete the drink? I finished my drink at 7:41am. I showed up to the lab at 8:25 and she told me she would take me at 8:41 to draw my blood. She never came for me so at 8:40 I went to her and she took me back but she was a mess getting everything ready so she didn’t draw my blood for another 5 mins. Based on my instructions it says exactly 60 mins and if not I have to repeat.