There’s no test for Detla. The Covid test is inaccurate and doesn’t identify Covid. The ‘disease’ is whatever they want to pretend it is - a mixture of illnesses including pneumonia, flu etc.
Surely you know the process by now.
https://covid19.colorado.gov/data
Scroll down the page and be regaled by not just Delta, but 3 versions of Delta, plus Gamma, plus more! Plus a category called “unknown”.
Somebody emailed me a meme claiming that. Not sure how it got started when there the technology in use for distinguishing the different strains have been around for a long time.
https://www.cdc.gov/coronavirus/2019-ncov/variants/variant-info.html
https://www.cdc.gov/coronavirus/2019-ncov/variants/cdc-role-surveillance.html
Keeping repeating that claim does not make it accurate (which it is not). LOL!