>>14230104Just my personal experience:
I took a WAIS 4 test a bit under a year ago, I was depressive and took daily anti-depression medication, i scored 142 but the psychologist who did it said that "I'd probably be a bit above, above 145 if I tried again in some time when i felt better"
So i guess a some points of difference? From what he said it didn't seem like it'd significantly affect it, less than one Standard deviation of the mean