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Cops, firefighters and health care workers will be first in line to get antibody tests once the city rolls out a serological testing program in the coming days, Mayor de Blasio announced Friday.

“There are real questions about the right kind of antibody testing,” de Blasio said on WNYC radio this morning after a caller named Jessica in Manhattan asked why her firefighter and cop brothers haven’t been able to get the tests that determine coronavirus infections or potential immunity.

“It is certainly our hope to find an antibody test quickly that we could feel is reliable, then employ it on a larger level and immediately the first priority would be our first responders and our health care workers,” de Blasio said.

“I hope to have an announcement in matter of days but as soon as we have that up and running it would be something we make available to all members of the PD and FDNY,” de Blasio said.

Earlier Friday, during his daily press briefing de Blasio said city officials were trying to resolved “unanswered questions” about the effectiveness of antibody tests because “the science still isn’t 100 percent clear.”

He said there are many different varieties of tests on the market including some lacking FDA approval.

De Blasio also warned that a positive antibody test is “not a rock solid guarantee” of immunity. The city will still advise frontline workers to wear masks and other protective equipment even after they receive positive antibody tests.

For now city health officials are telling public employees who’ve been sick to return to work once their symptoms have abated even without a test.