If you look at the azdeq website you can find their wait times. I have gone mid day on a Saturday to the one on Eddie Albert Way and had maybe one car in front of me.
Yes it's open, best to be early wait time is shorter.
As of today, Jan. 12, 2021; yes, it is open Monday - Saturday from 8 A.M. to 5 P.M. You can find their website on google for any other information you might need.
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