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I wouldn't rely too much on testing for mercury, it is pretty hard to get an accurate idea of what is going on. For starters, mercury gets bound up in organs and brain, and is unlikely to really show a high blood level, unless you have acute poisoning (a huge dose), rather than chronic poisoning (slow poisoning over time, building up).... It's possible it might, but I'd not bet my hands on it.

The same with hair testing, sometimes you can show a very low level of mercury in these tests, yet be highly poisoned. There are various reasons for this. The source of mercury itself may have been removed, but the leftover mercury is bound up and is not being excreted out, so is not showing a level in urine/hair. The person maybe suffering then from retention toxicity, to where they are very poisoned, but not pushing it out, so it may not show up properly.

Or, the person may really have "low" levels (at least these doctors "ideas" of low levels), but be easily poisoned by low levels of mercury and simply be intolerant to it...

What is really a safe level of mercury poisoning? Considering everybody is different and we all have different challenges going on. Much of this also comes down to personal genetics, immune status, other challenges that might be going on or toxicities, ability to eliminate toxins/mercury or the tendency to hang onto them... so people may respond differently to different levels of mercury. Some other person may seem to tolerate much higher levels than someone else for different reasons, but even then, they can sometimes slip into poisoning later on if something else happens to their health.

I don't buy into these so-called low levels of mercury, as there are too many reasons for this, plus mercury is so toxic that even at small levels can make a suseptible person VERY poisoned. E.g. someone might eat some low level mercury fish and be ok, someone else maybe very ill after it.

Someone quite healthy maybe tested for mercury and show higher levels of mercury than someone more poisoned by it. This may show they are healthier and more tolerant of it, or it may show they simply excrete the mercury much easier, thus it shows up on testing because it's being pushed out into the hair more and urine.... Yet someone else with high levels of mercury may show signs of corresponding toxicity and the results match the what the person is experiencing.

There is so much involved in this and there maybe ways that people can find to get a more accurate result of mercury testing (like challenge testing, but I'd suggest caution and a test that has been shown to be accurate and safer). It is also the way the doctor interprets the test results and should be taking many other things into account. THe person's symptoms (are they classic mercurial?), mineral levels on the test (mercury messes up certain minerals, appears to be a certain pattern it can create which is a tell tale sign that mercury maybe at work). Also another thing mercury messes up is the endocrine system. So symptoms associated with adrenals and thyroid maybe another classic sign of mercury.

It can also allow pathogens/candida to take hold and further increase a person's toxicity and misery. So these things should also be treated to help symptoms during mercury poisoning, or the person will suffer increased and often unnecessary suffering. It may not be a cure, but doing this can help along the way, as the person removes their amalgams and chelates the stored mercury. So I'd advise you to look up candida symptoms, you may recognise many of them, though sometimes it's hard to distinguish between candida and mercury symptoms, which is why it's wise to treat both regardless.

Mercury can cause cold body temperature, tremors, swollen tongue, severe mood swings, unnatural fears, paranoias, withdrawal hermit type behaviours, obsessive thoughts/compulsive behaviours, metal taste in the mouth, metal smell on the body, excessive/uncontrollable crying and/or salivating spells, depression, anxiety, suicidal thoughts, grey discolouration in the mouth or even on the genitals (where it should be pink), difficult in sweating (or excessive sweating), suseptibility to yeast/pathogens and many many other bizzare symptoms that are often hard to even describe.

candida can cause many also and may even cause some of the ones above, or cross over! If you have any of these symptoms, it maybe likely you are indeed mercury toxic and/or suffering candida. Candida however does not usually occur in isolation (unless it's a temporary case of it caused by antibiotics). Candida usually overgrows when a person's immunity is no longer able to keep it contained at natural levels. Mercury is one cause, virus maybe another, infections etc.

Anyway, sorry for rambling, but I hope some of this might help. Im sorry about not knowing about what level of mercury is "normal" in the blood and what is high. As I said, I don't believe that testing for it is always an accurate report of what maybe going on. Everybody is different.