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Clinical Laboratory

In-House Laboratory

Southwest Equine offers extensive in-house laboratory services.

Our in-office Idexx Blood Analyzers provide reference-lab quality results for Complete Blood Counts (WBC, RBC) and Chemistry Panels (liver, kidney, protein, electrolytes) within 15 minutes.  Fibrinogen levels are available within 30 minutes.

For horses with suspected infectious diseases, we offer rapid result testing (Strangles and EHV-1 in less than 60 minutes, Salmonella in less than 24 hours). We can easily monitor for safety to return to the general population in the case of Strangles and Salmonella as well as determine which horses are likely to require enhanced biosecurity measures at home

Joint fluid, peritoneal fluid, and thoracic fluid can be analyzed by our in-office laboratory machines, and microscopic analysis is routinely performed on complex cases.

Southwest Equine is proud to offer testing for Cushing’s (ACTH) and Insulin (Metabolic Syndrom) in our in-office laboratory. ACTH and insulin testing are critical when evaluating horses with laminitis or metabolic conditions. It takes several days to get results back from send-out laboratories, so the ability to have results within 30 minutes has been a game-changer when developing the best treatment recommendations.

Insulin tests can be performed stall-side and are often recommended prior to joint injections with corticosteroids, particularly in any horses with known or suspected underlying endocrine or metabolic dysfunction (Insulin dysregulation, Cushing’s Syndrome).

We are excited to offer the ability to diagnose and monitor horses with Cushing’s Syndrome with a test that provides results in 20 minutes (no longer do we need to send the test out and wait up to a week for results). Our Truforma Analyzer is capable of providing accurate results for both baseline ACTH and TRH stimulation tests in a timely manner and results will be available the same day or overnight (Depending upon the number of samples we need to run each day).

We offer stall side testing for anhidrosis to determine if your horse is a complete non-sweater, partial non-sweater or has a normal ability to sweat and may have a high respiratory rate for other reasons.

SAA is a marker of inflammation that is often used to monitor infections and response to treatment. SAA levels can be run on the farm or in our office with results within 15 minutes.

it is important to evaluate IgG levels in neonatal foals between 18-36hrs of age to ensure that they obtained enough high quality colostrum. Low IgG levels are highly associated with the development of sepsis/infection in neonatal foals. Our IgG analyzer is superior to the old subjective <400 mg/dl or >800 mg/dl style and will give a quantitative result of up to 2000 mg/dl.

We recommend strategic deworming schedules that incorporate an annual fecal egg count to prevent over-use and resistance to our limited dewormers for horses. We HIGHLY recommend fecal egg counts on foals and weanlings to evaluate parasite burdens and risk for ascarid induced respiratory disease.

Coming in 2025: we will provide in-office uterine cultures to increase the efficiency of diagnosing and treating uterine infections during the breeding season. Samples will be limited to uterine cultures only.

Some tests require submission to an outside laboratory or university. Results may take several days to weeks before they are reported back to our office. Below are some of our most common “send out” tests

Send Out Laboratories

Coggins Tests

Required for interstate or international travel. Results typically take 3 days, but expedited services are available (“Stat” Coggins- 24hr turnaround)

Vitamin E

Vitamin E is one of the most common diagnostic tests we send out. Vitamin E is high in fresh grass, but unfortunately most horses in Arizona do not have access to fresh grass and are Vitamin E deficient. Vitamin E is critical in neonatal development and neuromuscular function. It is highly recommended to check Vitamin E levels in any poor performance horse. Vitamin E has some very specific handling requirements to have the most accurate test results.

Infectious Disease Panels

While our in-office PCR analyzer is excellent for identifying a few highly contagious pathogens, it is often preferred to send out samples to a reference laboratory that can test for more pathogens as part of a panel to maximize our chances of being able to identify the cause of a horse’s illness. Results are typically available in 3 business days.

Histopathology / Cytology

Biopsies and some types of fluid (BAL) require special processing prior to evaluation under a microscope by a veterinary pathologist or an expert (eg muscle, airway) who specializes in examining tissue or cells at a microscopic level. Results typically take 1-3 weeks, depending on tissue type and lab chosen

Culture (Aerobic / Anaerobic / Fungal)

Non-uterine culture samples are submitted to an outside laboratory so that we can obtain “sensitivities” of any bacteria identified against commonly used antibiotics. This is important to help take the guess-work out of which antibiotic is the best to use, particularly when we need to change antibiotics.

Other

There are very few things we can’t test for if we know what to look for. Valley Fever, Reproductive Hormones, Drug Screens, Allergens, Toxins… we can usually find a lab to test what we are looking for!