You're welcome!
Your doctor can sign up with Genova to do the test. A kit would be sent to the doctors office and they would send you home with the urine collection. You freeze it and take to the doctor's and they draw the blood and send it back with a frozen brick that comes in the kit.
You and your doctor must follow all instructions exactly. I had my mom do it and her doctor wasn't working to do his part, but she was able to get it done at a local hospital who was able to follow instructions and send it in.
In the US, there's an Easy Pay program where you pay $159 up front and that's all. Good value for a test that's $2,000 list price.
It does have some heavy metal results and a general measure of toxicity to give you a clue if you have a problem.
A Doctors Data provoked urine heavy metals test is more detailed. You are given a chelator, like EDTA or DMSA, then fill up a urine container for a few hours then send in a sample. I believe its about $99.
You're probably right about mobilizing something you couldn't deal with. You need to have adequate water and fiber to eliminate, then ingredients for the transsulfuration pathway, then be making and recycling glutathione, the having the B12/methionine cycle working, and then add folate.
9mg of folate is a lot. Too much for most people. I have some folate SNPs, but still only need 1g of folate, but I need huge amounts of B12, B6, B2, B1, plus TMG, methionine, NAC, and glycine.
The important thing is you find what works for you. Finding and dealing with heavy metals can be really important. And getting methylation working smoothly is critical to good health.