We are clinical MDs and we have purchased these LAMP near-PCR products. They're top of the line and we've confirmed that they provide valid and accurate results, with RSV and influenza results matching lab-based PCR but at a fraction of the cost and time. It does need some time to get to know the system and what it means, but visit virus.sucks on any web browser including a mobile and it'll start you going. Seller was excellent and continues to be the best to mail to Northern America, including Canada and USA - just know you'll be paying a lot of customs potentially and time will be 1-2 weeks so plan ahead. We've continued to use this brand and Altruan to protect our family during the ongoing pandemic and potential health problems.