Okay, I have absolutely no intention of doing this! However, discussing hypos in another thread, and dealing with them quickly, got me thinking about this question.
I mean, what better way to raise BG quickly than to inject glucose directly into a vein? Even subcutaneous, it would absorb fairly fast and get the BG going up, bypassing all that time spent working through digestion.
So, there's gotta be a reason T1 emergency kits have glycogen instead of simply some well-calibrated dosing of glucose directly. But I can't imagine what it is.
Ringers Lactate, among the most common replacement fluids after blood loss, contains lactate, which is turned into glucose by the liver. While not exactly direct glucose into the bloodstream, it's not far from it.