DMPS challenge-please help

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Hello Group. Am living in netherlands and just got a DMPS challenge

for my 6 y.o. autistic boy. The results are below. Could anybody

advise me what the high creatinine means pre-challenge. The Hg that

came out after the DMPS is larger but still within range.

Pre-challenge

creatinine 16.32 (range 3.75-7.5)

Hg 0.4 (range 0.0-5.0)

Hg per gram creatinine 0.2 (range 0.0-4.3)

After Challenge

creatinine 8.99 (range 3.75-7.50)

Hg 1.7 (range 0.0-5.0)

Hg per gram creatinine 1.7 (0.0-4.3)

Does my child have a lot more mercury? I read somewhere that

measuring per gram of creatinine not so accurate? bt this is the

only test I could do.

Any advice greatly appreciated.

Thanks all, mary C