We are big proponents of preventative testing, not preventative treatment. Here are a couple of poultry testing locations you can send samples. You can also look for a local vet who will accept lab only samples. We prefer to send our samples to larger labs since they display very straightforward pricing right on their websites, and offer a wide variety of lab services for the backyard poultry raiser:
Make sure your samples stay cool, and are received within a couple of days from excretion. Time submissions so they do not arrive on the weekend, and try to include samples from a few different birds if you are testing the health of a flock.
UC Davis Veterinary Medicine – The sample submission process is fairly easy. You can click on submission forms on the tool bar, then select backyard flock. You can see a list of services and pricing for this lab here. Make sure to ask how they prefer to receive sample submissions. I once paid $20 to next day a fecal sample through USPS. It sat in a holding bin for six days before making it to the lab. UPS or Fedex would have gone directly to lab intake. My fecal sample was still viable for testing, but I shudder to think what a disaster a bird destined for necropsy would have been.
Washington State University – We have used this lab with success. They don’t email results, but you can call, and you will receive results by mail. They also have an online payment option that is fairly convenient. Our vet recommended this lab for accuracy, but it is potentially more expensive then an instate lab. The other drawback is the $10 submission fee just for sending in the sample. This makes testing closer to $40 after shipping is included. You can see a list of services and pricing for this lab here.
Try to find an in-state testing site so you can compare their rates, testing options, and turn around with other testing sources to determine which lab is best for you. Developing a good relationship with a testing laboratory can increase the poultry managers toolbox for a healthier flock.