To distinguish between Delta and Omicron you would need to do gene sequencing, which according to this article ”the genome sequencing used by public health officials takes nearly a week" (I would like to know more about the shortcut they mention).

With no way to identify Omicron and Delta patients, doctors struggle with treatment decisions.

https://old.reddit.com/r/Coronavirus/comments/rv8tgi/with_no_way_to_identify_omicron_and_delta/

Anyway the question for Bennies lab is if gene sequencing is available? They may have a source in PV or something.

There is also this for the PCR people

https://old.reddit.com/r/Coronavirus/comments/rv8tgi/with_no_way_to_identify_omicron_and_delta/hr7tj6x/