New Jersey residents lined up at both of Riverside Medical Group's Hudson County drive-thru coronavirus testing sites Christmas Eve.

"We're doing about 1,000 test today - just today, Christmas Eve. That doesn't include our other sites doing testing. Testing demand is through the roof and people are lining up," said Dr. Raj Brahmbhatt.

Brahmbhatt, who runs the practice and has been on the frontlines of testing and treating COVID-19 since March, says that while testing remains an important tool in the fight against coronavirus, do not use a negative result as an all clear for Christmas cheer.

"If you get tested today, you are good today. If you are exposed yesterday, your test will not turn positive today. There's a chance your test today will not put you in completely in the clear," said Brahmbhatt.

For those still heading to family or friends for the holiday weekend, even with that negative test and even if you quarantined before a gathering, officials say don't let your guard - or your mask - down.

Riverside testing sites will be closed Christmas day but will reopen Saturday.