My advice if you get blood on your quilt....immediately put full strength hydrogen peroxide onto the area. It breaks down the enzymes in blood and is the absolute best way to get blood off from fabric. As a nurse who worked in the ED for 15 yrs.....ask me how I know :) I saved countless scrubs from being ruined this way. And yes....I've already had to use the same method for getting blood spots off from quilts when the needle has bit me while hand quilting.