Sard soap bar! Works on about anything lol
Maybe give that a go

I was in a hospital and got blood all over my white cotton shirt the nurse came to me with a spray bottle of Windex window cleaner and said this really works. So I took it to the bathroom and sprayed my shirt and waited 10 minutes and washed it out in cold water. IT REALLY WORKED! I have since used it on a carpet stained with blood. Who Knew!

Do a strip wash by putting it in the bathtub with hot water, 1/4 cup borax, 1/4 cup washing soda and half cup washing detergent. Stir every half our till water is cool.

I find dynamo liquid excellent, poor a little on the stain, leave it to soak overnight with a little more dynamo in the water, and then give it a bit more of a scrub with Sard soap if needed.

Baking soda with vinegar. It might helps

Have you tried baking soda with Aldi stain remover spray? Mix it together in a bowl and apply it to the stain and let it sit for a while then wash normally in cold water

Sard wonder soap bar has always been a go to for me. have heard the stick one is good too.

Sard is what works best for us too, try it in the soap variety, much better value for money

Is it something you could get dry cleaned, since cold water hasn’t worked?

Try the Aldi stain removal spray and soaking the clothing.. I find the sooner you do this the easier the stain is to get out

I use Sard Soap on everything. Not sure if it works on bloodstains.

Sard wonder soap is what I would recommend. Leave it to soak and use a cold wash to get it out

I find Sard wonder soap to be really good.

There’s some really good advice here already! Soaking and scrubbing and using your stain remover of choice will work – it may just take time.

I find the key is to let it soak overnight. I use Vanish, but Sard is also good