I get mine done through the local vets, luckily we have an SAC (Scottish Agricultural College) lab just down the road,so I just drop down and hand in my samples. Maybe would be better do it myself, but this way I can get straight away advice from vet on what wormer etc etc. Works for me.
If your goats don't have runny/loose droppings and their coats don't look rough, then maybe all that's needed is a mineral/multivitamin drench? Are they heavy milkers? Maybe you want to play around with some changes in feed - some soaked sugarbeet shreds (still warm!), oats, flaked maize...
Mine absolurey love freshly scythed, long grass and milk goes up whenever they get lots of it.... branches also good, especially hazel, willowherb, willow, some ash, elder etc etc
Oh and bananas and carrots!