As far as I know (correct me if I am wrong), according to the regulations as of today (they change frequently), if you have symptoms you suspect might point to being infected with CoronaVirus, you are supposed to immediately call your doctor. If your doctor feels the symptoms warrant it, your doctor is to direct you to the kupat cholim for a Corona test.

A beis din specializing in medical issues led by Rav Shmuel Eliezer Stern has issued a psak, after consulting with medical experts, telling the public that they should not go to get tested immediately, but should wait 48 hours with fever above 38 degrees Celcius or from the beginning of other symptoms.

The beis din added that during these 48 hours, the sick person should stay home and away from other people, not go to shul or other public places. Yeshiva student as well, in such a situation, should stay home.
source: Behadrei, JDN

Honestly, I am not sure why this needs a psak. I do not know why someone sick would call a rabbi to ask if he or she should get corona tested and when. If you are sick, call the doctor. If the doctor thinks the suspicion is not strong enough, he'll tell you not to get tested yet, and if he thinks you might have the virus, he'll order the test. I am not sure why this needs a psak beis din.