When you first arrive at the veterinary clinic, the veterinarian will start with a physical exam. This will allow her to take note of all your dog’s symptoms. If your dog has watery eyes, the veterinarian may perform fluorescein staining to check for a scratch on the eye that could possibly cause the watering. If your dog’s skin is irritated, the veterinarian may take a skin scraping to check for external parasites or a swab to assess for fungal or bacterial overgrowth.
Blood work will be performed to give the veterinarian a broad look as to how the internal organs are functioning and to rule out other possible causes of the signs such as a parasitic infection. A complete blood count (CBC) and chemistry panel will provide the veterinarian with needed information for proper assessment. If your veterinarian feels it is necessary, she may also perform a urinalysis for further evaluation of kidney function.
Bicom testing may be something you have heard of when researching food allergies. Bicom testing is also known as bioresonance. This method believes every being and substance in the world emits its own electromagnetic wave. Bicom testing is not commonly seen in veterinary practices because it is considered an ‘alternative’ medicine and there is no scientific evidence it works. Many holistic veterinarians use the Bicom testing, but conventional veterinarians believe this method does not work and that it is a way of scamming money out of concerned owners. The vets who use it claim to be able to takes a blood sample from your dog and tests different food items and substances to see if it has a ‘good’, ‘neutral’ or ‘bad’ response. If the response is ‘good’, then the item puts out a wavelength that is compatible with your dog’s blood which means no adverse reactions should occur. If it is ‘neutral’, the item being tested does not put out a wavelength that alters that of your dog. If the response is ‘bad’, the item being tested causes your dog’s blood wavelength to become stressed. Stressed blood leads to a stressed body, and therefore, an allergic reaction. The main downside to the Bicom testing for an entire food, is it does not tell you what specific ingredient your dog is allergic to, just that something in the food reacts poorly with your dog.
For most, allergy blood work and/or intradermal testing can pinpoint a food allergy. This can be costly and is not always effective, but generally points us in the right direction.
A food trial is also sensible, whereby we avoid certain foods for several weeks to see if an improvement in symptoms is noted. Ideally, we would feed only a hydrolysed diet for 8 weeks alongside no treats, chews or titbits. If symptoms resolve, a food allergy is suspected. If we re-introduce the suspected allergen (for example, a Royal Canin diet) and signs recur, the diagnosis is confirmed.
If symptoms do not return with the reintroduction of the Royal Canin, then it was a source other than the food.