All online tests I've taken for mental health have actually said "this is not a substitute for a diagnosis" and that if you think you have it "to see a doctor". I don't really think that is all that misleading...
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Diagnosed with classic Autism
AQ score= 48
PDD assessment score= 170 (severe PDD)
EQ=8 SQ=93 (Extreme Systemizer)
Alexithymia Quiz=164/185 (high)