Hey there. I've been looking into getting my bloodborne pathogens training done. I've been told that I can get it at Seattle Red Cross. I'm looking at their classes and it seems that they have three different ones: a 3-hour, 4-hour and 7-hour. The longer the class, the more it costs. Which class should I take to get the certificate I need? I'm all for the-more-I-know-the-better idea but I don't want to spend a bunch of money for information that I don't really need.

Thanks!