Online tests - how reliable

[Prokupatuscrakedatus]

I just did two online tests mentioned on this board - and I was as honest and 'unthinking' as I could be:

in the first test I scored 120 (NT cut off for females is about 60)
in the second I scored 41 out of 50.
DH tells me I am very like DS.

How reliable are these tests as indicators?

You haven't said which tests. They very greatly.

Oh, sorry of course:

one was this: Ritvo Autism Asperger Diagnostic Scale-Revised (RAADS-R) and it's 80 not 60 (my error).

and the other was:
aq for adults

I have looked at the research behind the AQ test in quite a lot of detail (possibly obsessively). I scored 42, and I have done every time I took the test. Form the original population the test was devised on, over 98% of peope with that score had ASD of some sort.

The link to details of the other test is here: link.springer.com/article/10.1007%2Fs10803-010-1133-5

This test specifically cautions that it is to be administered by a clinician and not self-administered. I score between 178 and 192 the three times I took the test. So you can see how day-to-day variation can change your answers because they change your perception of yourself.

In my case, I think my scores might be higher because I'm introverted as well.