Do you mean technically or legally? Legally you need to be dead for the hospital to recover organs. But technically, the amount of time you need to be without oxygen to go into a persistive vegetative state is much less than the viability window of your organs. The time between death and viable organ recovery varies on the organ itself and how soon the body was chilled. Heart and lungs must be transplanted within 4-6 hours but other organs and tissue can last much longer. It also depends on how you die: starving to death several days after having your feeding tube removed may make your organs unviable but dying shortly after being removed from a ventilator could still produce viable organs.

Both sides are wrong. Resusitation is more likely for a donar (if there is any bias).

OK, maybe a panel of neurologists looking at an ECG are going to be biased if you are stable but not reviving. But it's a panel of neurologists looking at an ECG. Mistakes are rare.

Before getting to the ICU, you've got the paramedics, triage nurse, and ED team, all of whom are also hypothetically going to be biased just as much to get you stabilised if you're a potential donar. Is the paramedic going to run a red light? Will the ED doctor work an hour past their shift when they can just read out the time and go home?

The info isn't on your license to tell the panel of neurologists. It's there so that the paramedics know to switch on the lights even if they think it might be a hopeless case.

The step that a lot of people miss is letting their family know their wishes as well in very clear and strong language. Don't forget to do that.