you cant!
your body will do the blood thing by its self (and quicker then urine
afaik)
Hair you got no chance, shave it all.
Cut your hair then get weaves?
Try TestClear's products - I cant vouch for them personally, but a lot of people do.
Hair tests are wicked good - they can trace your geographical movements based on the ratios of elemental isotopes
__________________
"yes i smoke shit straight off the roach clip.."
- Cypress Hill
"Years ago I recognized my kinship with all living things, and I made up my mind that I was not one bit better than the meanest on the earth. I said then and I say now, that while there is a lower class, I am in it; while there is a criminal element, I am of it; while there is a soul in prison, I am not free."
— Eugene V. Debs