(CNN) — Alyssa Milano says she has tested positive for coronavirus antibodies after having tested negative for Covid-19.

I also took a covid antibody test (the finger prick test) after I was feeling a bit better.

Milano went and had her blood drawn for another antibody test.

“I am POSITIVE for covid antibodies,” she wrote.

I just want you to be aware that our testing system is flawed and we don’t know the real numbers.”.

Milano, who also shared an image of her positive antibody test result, said she plans on donating her plasma in the hopes of helping others.

BRATENAHL, Ohio (WJW) -- Six employees, including a chef, at the private club where a fundraiser was held for President Donald Trump Thursday night tested positive for COVID-19 before the president's visit, club management confirmed to FOX 8 News

Shoreby Club General Manger Andrew "Buddy" Kane said the employees underwent a rapid antigen test prior to the president's arrival

He said the six employees who tested positive, and those who came into close contact with them, were all quarantined upon receiving the results before the event