The truth about discordant NML resultsThey used heat treated viral samples. The link I post will shed light on this. Please read also the comments by some on this revelation. Especially read the comments by The-Modern-Age.
https://twitter.com/Mod3rnAge/status/1333435939507539969?s=20
It's unbelievable that Canada's National Microbiology Lab heat treated the specimens and then expected Sona's lateral flow test to detect dead or mostly dead virus in the Specimens.