I think Ruchill is a bit out of the way
basically you want to find a clinical psychologist, preferably one that specialises in adults with learning difficulties or autistic spectrum disorders
there should be a few in Glasgow itself, if you wanted to find one the thing to do would be to ask at the Royal Infirmary, Glasgow or any local general hospital, if they could sign post you.
the link provided is about one in Bridgeton, it CAN be a rough area so don't go yourself preferably - someone I know got attacked badly and needed an operation.
you can get a bus to Bridgeton, and the trains from Argyle Street Glasgow go there [it is the first stop on the line from Argyle Street]
Bridgeton probably has more than its fair share of people who take illicit substances.
I don't know where Abercromby business centre is, may have passed it once in the car.