Tests take time, and have a cost to run them. Collecting samples takes time and usually involves a technician which eats into profits. Further, you have to call people back with the test results or have them wait for results. Then they have a bunch of questions which you’ll answer with “You need to discuss treatments with your vet, we’re just a shot show.”

Try not to get bogged down in diagnostic testing with heartworm blood samples, or fecal samples to check for worms. These are low profit services that require time and more record keeping. It also doubles your expenses as far as having somewhat educated technical assistance, and increases your chances of being bitten. Losing 5 to 10 minutes applying a bandage to a damaged finger, is one or two dog annuals that you will not be able to perform. Any service that has low profit margin is and or requires an investment in time can be referred back to the regular veterinarian or skipped all together. Again, these clients are typically nondiscriminating, and responsibility for securing their own heartworm tests and fecal exam is really fast to them as they are now by virtue of standing in your line, captain of their own pets healthcare. You are providing an à la cart service, you are not the pilot of their pets healthcare future.