It's just the only one that I could get numbers on. So... show me sensitivity/specificity numbers that show a 0% false positive rate. The CDC PCR test [1], for example, has some data and no false positives, but the sample sizes are so small (107 known negatives tested) that the best we can estimate is ~96% specificity.

[1] https://www.fda.gov/media/134922/download