This item is not US FDA Approved!!! No application has been filed with the US FDA, as such the methods and numbers used to support the claim for 99.4% accuracy have not been provided or peer reviewed. This test is being sold illegally in the US. The US FDA has received other complaints, this (shell) company is currently under investigation. Don't believe me, visit the FDA website for yourself. This product has not received regulatory approval for sale in any country, not even in China where it is manufactured.
The second test supplied does not and cannot provide confirmatory testing for preliminary positives. Confirmatory testing can only be conducted using a different (non-rapid) testing method (PCR, ELISA, Western Blot, etc).
Legitimately US manufactured and marketed tests retail under $20, and many organizations provide FREE and CONFIDENTIAL TESTING, with counseling. Don't waste your money on this relabeled knock off.