Can you mask drug tests?

I need to come clean in a drug test in 4 days time.

I've heard that there is a product on sale in the U.S. which can mask drug use by temporarily tampering with the blood chemistry of an individual (even though there are toxicity issues to be taken into account).

What should I do??

Answer:

A doctor I know who had the same problem himself looked into these products and concluded that none worked better than plenty of water and vitamin C.

Nicholas Saunders