The important thing is to always make an appointment, or you will wait all day while fifty people go ahead of you, and then they can still reject you. I visited a website for information and it said nothing about appointments. I called the number and the recording info said: No appointment is needed, and that is all it said, no option for selecting appointments. I thought I could just show up early, but it was packed. After waiting three hours I complained. They refused me for a nonsense reason. I said I had donated platelets weeks ago. They said that means I have to wait two months. I said that is wrong, that I know platelets are like plasma, you can donate twice in one week. She said she knows and she has been waiting for corporate to call and that's why I waited an extra hour, and she sent me home. I talked to another person that said he waited there and was sent home because they couldn't find his vein, and he has given blood before. There are a number of nonsense they can pull to waste your time. Like if you drank alcohol the day before, or if you had an aspirin, or if you drank a cup of coffee, or if iron is low. Obviously they don't have much of a need for donors if they are sending people home for such silly reasons. The people there are the kind of people who just want a few dollars for a pack of smokes or beer, and for most people the compensation isn't worth it. They waste my whole day.