I heard that the during the ELISA test, the laboratory assistant will divided the sample into several parts? Isn't it? If so is that mean it actually test each of the parts? For example if they divided it into 5 parts, that will be make five tests and get five result, if one of them is positive then they will re-test to confirm. They do this in order to avoid the tests-mistake such as reagents mistakes which is sometime cause the false negative. Am I right?
I ask this because I heard that in China they sometime have reagents mistakes.