but it says in the new testament to abstain from blood and laws where giving to Noah after the flood on proper use of blood.
So what? If I write a law that i conceive on a piece of toilet paper, and it survives 2,000 years, does that make it legally binding in the future? Just because someone wrote it doesn't make it right or relevant or legally binding to modern society. The laws on blood were written for a desert tribe that has been extinct for 2,000 years. And, not to get off track, but you have researched that a global flood is indeed impossible right?