The short answer is absolutely yes, and now the longer response!
There will be times you test and get a zero or very low count and therefore you don’t have to drench. In this circumstance you have certainly saved, both the cost of the drench, as well as time and labour.
There are other times you’ll get a result that means your stock are under moderate or extreme worm pressure. By drenching you’ll be saving production losses and these can be hugely expensive. We have so much evidence over our years of testing to back this up!
Clients who routinely test find they are generally on top of there worm burdens and levels don’t get out of control.
Testing may not mean you drench less, but it will mean you do it at the right time. Drenching without testing is just a guess!