It's also recommended, if the first test is positive, to follow it with a confirmatory test that looks for antibody or nucleic acids.

对于筛查试验阳性者，建议进行确认试验，检测抗体或核酸。

Also, confirmatory tests that measure brain activity such as an EEG aren't required in many countries.

此外，许多国家不需要测量脑电图等大脑活动的确认测试。

For DD, the suspicion of toxoplasmosis before confirmatory blood tests is enough to warrant antiparasitic treatment.

在DD的案例中，在验血报告出炉前，这些线索已经足以让疑似遭到弓浆虫感染的DD接受抗寄生虫的治疗了。

In Mexico, a single physician is fine, but they have to wait 24 hours before declaring death, and run confirmatory tests.

在墨西哥，一个医生就可以，但他们必须等待 24 小时才能宣布死亡， 并进行确认测试。

In the United States, two physicians are required to conduct the brain death test six hours apart before declaring death, but confirmatory tests are optional.

在美国，在宣布死亡之前，需要两名医生相隔六小时进行脑死亡测试，但确认测试是可选的。