What's the Big Deal About Washing the Red Cells?

Washing removes any free annabody that might be surrounding the red cells. If we didn't wash, would that make us at risk of a false positive or a false negaty? It's a false negative most often, because the ana body would actually neutralize any free anna body. So it would bind to the anti i g g that we're adding and give us a false negative reaction. And o the other crucial thing in the test that is the fact that the t e live, scientists, when they do the testing, should be making a fresh cell suspension directly from the patient's sample. Right? Excuse me. I'm in that description, sue.