RE:Sona is done companies that have fda and EUHit the nail on the head with QSC. Not familiar with BLR but will look into it.
In my opinion QSC, VST or THRM are best 3 alternative covid plays with QSC being # 1
They have USFDA approval for months now and real infranstructure across US to sell tests at the retail level, potential yearly rev is in the 100s of millions, if they meet 60% of their testing capacity that puts their SP reasonably at $7-$10 and its trading at 15 cents right now.... throw in multiple other invetments in treatment/vaccine development in very high profile places (mt sinai)
Easily the most undervalued stock out there right now and only becasue no one knows about it. management team needs to do better on PR and IR to get the word out but going for dirt cheap right now so great buying Op.