I'm going with Parvo or Giardia.
Red flag: they're running a test for Lyme's disease??? They're just trying to make as much money off you as they can by running the whole spectrum of tests. Christ, even on fictional shows such as House, they don't run every test possible immediately - they suspect something - they run a test to check for it. If they rule that out, they run another test, etc. Sounds like they can't even run their own tests.
Recently, there was a big article on some site or another about how a lot of the chains of veterinary clinics are making money by pushing as many tests as possible. Find another vet.
yea i thought the same when i read heartworm test. fucking crooks, i hate vets as much as i hate dentist. fucking crooks.
What are the symptoms of canine heartworm?
Symptoms of heartworm disease may include loss of appetite, lethargy, exercise intolerance, weight loss, fever, dyspnea (difficult, labored breathing, shortness of breath), coughing, weakness, dull dry coat, and hemorrhage.
what are the symptom of canine Parvo?
The major symptoms associated with the intestinal form of a canine parvovirus infection include severe, bloody diarrhea, lethargy, anorexia, fever, vomiting, and severe weight loss. The intestinal form of CPV affects the body's ability to absorb nutrients, and an affected animal will quickly become dehydrated and weak from lack of protein and fluid absorption. The wet tissue of the mouth and eyes may become noticeably red and the heart may beat too rapidly. When your veterinarian palpates (examine by touch) your dog’s abdominal area, your dog may respond with pain or discomfort. Dogs that have contracted CPV may also have a low body temperature (hypothermia), rather than a fever.