By Rob Lenihan As Covid-19 rises, one company is voluntarily recalling its home Covid-19 test ‘out of an abundance of caution.’ President Joe Biden took to social media recently to announce that Americans can once again order free covid-19 tests. “Covid cases are rising across America as folks gather for the holidays,” Bidentweeted on Dec. 15. “That’s why, starting today, every household can order 4 free Covid tests to be shipped straight to your door.” The program was paused in September after more than 600 million tests were distributed. Covid-19 cases have resurged in the U.S. in recent wee…