I pricked my finger with a straight pin while working on the blue quilt. Quickly I dropped the quilt to avoid any blood spots on the fabric. Most of my quilts have enough DNA to duplicate me at any time. More than once I have run the sewing needle through my finger or had a mishap with the cutting blade. Although I checked the quilt when it happened, it was not until the next day that I noticed this. My DH thinks I should be outfitted with safety goggles, steel toed boots, a hard hat and work gloves each time I enter my sewing room.
Of course, the stain was on a white block. Heaven knows it could not land on a dark blue block. I remember reading peroxide could be used to remove blood stains from fabric. As I was not in the mood to undo the block, it was worth a try. I placed the stained block over a tall glass, poured a teaspoon of water on the spot, followed with a capful of peroxide. Instant bubbles. Then I gently blotted the block with a dry cloth and repeated the capful of peroxide. After three applications of peroxide, I rinsed the block throughly with warm running water. I placed the quilt on the drying rack as I did not want to use the dryer as the heat could set the stain.
The peroxide did the trick! No more stain. The blue quilt is almost finished. At first considered a border of bricks, one of each of the fabrics used in the quilt. I have now decided to finish the quilt with a small white border and a binding of all the blues. That at least is today`s plan.

I find soaking it in cold water overnight works too, so long as it isn’t already set. I have a lot of practice getting blood out of things
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DNA on your quilts sounds like a good plot for a sci-fi movie. Perhaps “The Grandma Clone Wars”?