preservation of blood

[rogerxd45]

so first off i know this is weird but i would like to have an ampule or vial with my a small amount of my blood in it. past attempt's have failed since the blood coagulates and separates.

 

i do not need "preserve" the blood so to speak since i will never inject it back in.

 

my question: is there a household chemical or easy to get chem that will keep the blood stable (how it looks when it comes out)

 

i know it is dangerous but i did lots of research and talked to a fe healthcare professionals about ho to extract the blood as safely as possible. thankfully i have good veins

 

so even if said chem will ruin the blood all i care about is that it stays the same color

 

please dont ask me why i ant to do this, i just do and am willing to take the risk to do so.