Difference in tests?

Question

So I’m wanting to buy a FRER (First response early result) all the tests ive recently have been Walmart .88 ones or the off brand and they’ve been negative. Have you taken an off brand and had a negative then had a pos with frer?

Answer

It was opposite for me. Always positive with amazon cheapies and dollar tree. Always negative or invalid with first response. And that was for three pregnancies.

Answer

Yup, seems like from testing early. I got negative with the dollar store  test and the Walmart and positive with frer

Difference in tests?

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