Can the symptoms of panic attacks be mistaken for the symptoms of hypoglycaemia?

Yes: There is a good deal of symptom overlap between a panic attack and symptomatic hypoglycemia and one could fairly easily be mistaken for the other. Also, don't prematurely rule out the possibility of both conditions co-occurring.

Panic: Sure. Eating crackers and running blood sugar levels and history of diabetes on medications can differentiate the two.