No they don't, however, they discourage waiting for passengers inside the airport
I was just at the PDX airport and got picked up and dropped off last weekend and they didn't test my driver nor me. So no they dont
As far as I know you don't go inside the airport when picking up a passenger. This of course may be different for those who are picking up someone with a disability but I can't be sure. So, in short, no they don't. As far as I know because you wouldn't be entering the airport anyway. If you look at the reviews I've done there is one of PDX and it briefly explains what the pick up of a passenger looks like.
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