failings and ijust cannot fathom the failings that would lead to this level failings that would lead to this level of failings that would lead to this level of false negative results. could level of false negative results. could it level of false negative results. could it be to do with a batch of pcr tests? could it be to do with the lab? it pcr tests? could it be to do with the lab? ., , ., pcr tests? could it be to do with the lab? .,, ., ., , ., , the lab? it has got to be the lab. you have controls the lab? it has got to be the lab. you have controls in the lab? it has got to be the lab. you have controls in place i the lab? it has got to be the lab. you have controls in place such l the lab? it has got to be the lab. i you have controls in place such that if the you have controls in place such that if the asset you have controls in place such that if the asset itself is not working you will if the asset itself is not working you will see it very quickly. what thi