The best chelation method is PROPER made Kombucha Tea because it contains Glucuronic Acid which is the best chelator known right now far exceeding EDTA! I suggest at least 2 litres a day of this tea which is expensive.
Talk to the people doing the test if they are alternative about Kombuchas special properties. The only problem is that some makers can't manage to produce this acid whilst some can. Only have the Tea and not just the culture as its when the culture eats the Sugar in the preparation which makes the properties. If it goes in your body from culture wheres it going to make these properties?