parasite cleansing is key! I do not know how the parasites and the Amalgam are related either. Perhaps your Health Practitioner can enlighten us both.
You can run a Hair Analysis through either Drs Data or Great Smokies Laboratories.
You can also use the foot pads and send them in for analysis to CTS Originals Lab (or you can do both!)
If you find high levels of Heavy Metals, I would consider detoxifying, whether the problem is directly related to parasites or not.