So-called "challenge tests" are a cheap parlor trick and don't show anything meaningful.
If I gave you a large cup of coffee (with caffeine) or you had three beers you would urinate more. That is what caffeine do to your kidneys.
Should I then claim you have diabetes since my "challenge test" made you urinate more?
The same applies to giving someone EDTA, DMPS, or DMSA. They will temporarily raise the urine level of mercury or lead (both found in virtually everyone). That is because they bind to the material and force additional excretin beyond normal rates. This will only happen for a short time. Eventually the body will reequilibrate. Several scientific studies by toxicology experts have shown that these compounds do NOT remove heavy metals from "hidden body stores". There are no **hidden stores*. The agents do NOT remove material from the brain or nervous system. Small amounts of new heavy metal get into our bodies daily as these are in the food supply (all foods) since small amounts of heavy metal are in the soil everywhere. The earth's crust is made that way. Our bodies have experienced these for centuries and they are not harmful.
DMPS is illegal in this country. Anyone using it is breaking the law. It is an unapproved drug for good reason. Remember thalidomide? DMPS and many other chelation agents, can cause severe and permanent kidney problems.
Anyone who tries to use DMPS on you or your child and claims it "works" or is "safe" should have no problem signing a notarized letter that they will be fully and personally responsible for any harm caused to the patient, and post a bond to that effect (many chelationists have hidden their assets to make themselves suit-proof; malpractice insurance won't pay for fraud, or illegal drug harm; you will be left high and dry if something bad happens).
read about DMPS at www.dmpsbackfire.com
Robert Baratz, MD, PhD, DDDS
Newton, Massachusetts