not without some specialist equipment, im sure, plus a strictly controlled environment as THC is relativley unstable.
you would also need to bulk test a lot of the same plants to get a reasonably scientificly reliable result.
thats a NO, basicly

the proof of the pudding, as they say, is in the tasting.
some weed with reletively low THC is, i find, far superior to some of the "uber" strains.
find a strain you personally like, and then you can be sure that its good shit!