Do I need to draw blood after the hotel isolation?

There is no need to draw blood after isolation.

Generally, only the nucleic acid test of throat swab or nose swab will be done later.

Hotel isolation/kloc-do you still need isolation when you go home in 0/4 days?

According to the prevention and control isolation policy in your hometown.

Generally, the people who need to go home for isolation are those who have lived in other provinces in the past 14 days, those who have lived in the city (state, league) where the high school risk area is located, and those who have crossed the trajectory of infected people. Persons with red and yellow health codes should report to the community (village) immediately after returning to China, and do a good job in epidemic prevention such as nucleic acid detection and health monitoring as required.

For those with normal travel code and negative nucleic acid test, no measures will be taken to continue isolation after 4 days of hotel isolation/kloc-0. However, if some areas are strictly controlled or there is a new epidemic, it can be required to be isolated at home for about 7 days according to the situation.