How to get blood out of my shirt?

Salt and COLD water, preferably before the blood dries! Don't use warm or hot water because that 'cooks' the protein in the blood and fixes it (and the stain). Once the red blood cells and plasma have been soaked out, and if a stain still remains (and the material is white), a gentle hand application of a mild bleach (the stuff used for sterilising babies' bottles - called Milton here in England - is good when diluted.

I have always heard that peroxide and cold water removes blood. That is before washing it. Soap and cold water is good too.

That sounds like you've lost a lot of blood at the nurses expense, I imagine it also hurt to have to be stuck twice. I've used extremely hot water and vinegar to get blood out before. Then washed the item.

I had this happen once, my mom told me to use baking soda and water. It worked for me. Give it a try there. See ya soon.

This is my usual method on removing blood stains and other stains in my shirt; usually I washed my shirt with a lot of liquid and powder detergent, after washing it over the washing machine. I let it sit overnight, and the morning after I soak it with water and bleach. Put bleach on the stain area but not too many, just a little cap of bleach would do and somehow, brush the stain part then soaks it for an hour. Don’t soak it over night because somewhat it will ruin your shirt. After soaking, wash it again with cold water and rinse. Dry it in an open area where it’s sunny.