As noted by the web artilce, the urine fractionated porphyrin test is done by labs in the U.S. like Lab Corp and Great Plains; however the FDA does not allow U.S. labs to provide information and explanations that deal with issues like mercury or metals toxicity. For political reasons they don't admit that mercury can cause health problems, if they did they would have a big liability because they have allowed mercury to be used in dental fillings from which people get high mercury exposures. Scientists and patient support organizations like DAMS have been pushing them to ban or restrict use of mercury in dentistry for years, but FDA has resisted claiming they are not aware of mercury causing harm. Even though there are thousands of peer-reviewed studies documenting it, millions of medical tests and clinical cases, documentation by government organizations like U.S. EPA and ASTDR and from Sweden, Germany, Japan, WHO, etc.
www.flcv.com/
If you get the fractionated porphyrin test done by a lab like Lab Corps, you can ask about the results on a forum like this or to someone like me or Leo at DAMS. We have a lot of experience with all of the tests for mercury. I will likely be going to work in a year or so for a medical clinic overseeing tests, not just for mercury. I've begun getting training for the certification that I need. The porphyrin test is not about mercury level or toxics level, but of metabolic damage that has been done by toxics. The level of waste porphyrins indicates degree of metabolic damage, and the pattern of which porphyrins are in the urine indicate the likely cause of the damage. The article notes that precoproporphyrin is the one (still in the test) that most consistently indictes mercury. FDA had the best indicator of mercury taken from the test, but it still is a relatively good test. Before it was required to change it, it was better.
Bernie
Bernie