rapid antigen test       
noun [ C ] uk/ˌræp.ɪd ˈæn.tɪ.dʒən ˌtest/ us/ˌræp.ɪd ˈæn.t̬i.dʒen ˌtest/ (abbreviation RAT)
 快速抗原检测
a test done using a small medical device that tests whether or not there is a particular substance, gene, etc. in a sample (= a small amount of a substance)
  Book an appointment for your Covid-19 rapid antigen test at one of our locations. 在我们站点之一预约您的新冠快速抗原检测。 
 Some medical teams performed influenza rapid antigen tests on site. 部分医疗队在现场做了流感快速抗原检测。 
 Synonym: lateral flow test
 - More examples
 - A rapid antigen test was available if a time critical test was requested.
 - Women can be screened in labour with rapid antigen tests to determine whether they are shedding virus.
 - Rapid antigen tests were performed according to the manufacturer’s instructions.