"I’d like to thank everyone for reaching out and expressing your concern and support," Chuck said in a statement. "You all be safe and please take the necessary actions to help ensure your well-being."

The 57-year-old was concerned earlier this month that he might have contracted the virus ... this after he said he experienced flu-like symptoms after some cross-country traveling.

Barkley told his "NBA on TNT" co-hosts on March 12 he wasn't feeling well ... and that he was self-quarantining just in case he did have the virus.

But, Charles said he's all good this week ... "I’ve received my COVID-19 test results this morning & they are negative."