Can I bring an antigen detection kit with me to study in the United States?

You can bring it.

New coronavirus antigen detection kit refers to the new coronavirus antigen self-test product. It should be noted that antigen testing cannot completely replace nucleic acid testing. The National Health Commission emphasized that nucleic acid testing is still the basis for confirming the diagnosis of new coronavirus infection, and antigen testing can be used as a supplementary method to screen specific groups, which is conducive to improving "early detection" capabilities.