Platelets only last for five days. The need for donors is high. Plasma can be collected at the same time as platelets.
These blood components are used to treat accident victims, organ and marrow transplant recipients, cancer and heart surgery patients and those with blood-related diseases like sickle cell anemia.
What can you do while you are hooked up to the machine? I always watch a movie. This time I watched Hugh Jackman in The Greatest Showman. No long lines, no talking audience, no rustling treat bags, no slurping, and no big ticket price.
And best of all a warm blanket!