Ok - that is very high.
When you get a high, always wash your hands and retest just to be sure. You'd be surprised how even a tiny, tiny trace of something on your finger can affect the reading.
I'd be gasping with thirst at 24, but if you're having a lot of highs, it's possible your body may have got used to them so you don't feel as bad.
It would be worth speaking to your nurse about the highs to see what they advise.
I see you're on insulin. Do you count carbs?