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UC Davis Horse Tests

UC Davis Horse Tests

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UC Davis offers a wide variety of clinical diagnostic testing for horses. This list contains links for many currently available UC Davis horse tests. Please click on the links for specific information including cost, turnaround time, and sample submissions. Some links will take you to a searchable site where you can enter the name of the desired test for details. Note that in many cases sample submissions and testing requests must be made by a veterinarian.

For additional horse testing options or related questions, please contact the respective laboratories (see box at right). For questions about other equine-related veterinary services, contact the UC Davis veterinary hospital large animal clinic at (530) 752-0290.

Frequently Used Equine Tests

Complete Blood Count (CBC) and Chemistry/Biochemistry Testing

Corynebacterium pseudotuberculosis (pigeon fever) - CAHFS, UCD veterinary hospital Clinical Laboratory. Learn more about pigeon fever in horses here.

Equine Blood Type and Antibody Screen (including neonatal isoerythrolysis (NI))

Equine herpesvirus 1 - 5 (PCR Lab); EHV-1 (CAHFS) - Learn more about EHV-1 here.

Equine influenza virus (HI-A2, Alaska ’91, HI-A2, Kentucky ’07); equine influenza antibody testing - Learn more about equine influenza here.

Equine Protozoal Myeloencephalitis (EPM) - SarcoFluor™ and NeoFluor™, Neospora (IHC) - Learn more about equine protozoal myeloencephalitis here.

Fecal float (also available here)

Myosin-Heavy Chain Myopathy (MYHM) genetic test (immune-mediated myositis (IMM) and non-exertional rhabdomyolysis). Learn more about MYHM/IMM here.

Parentage/Genetic Marker report

pNF-H, phosphorylated neurofilament ELISA for eNAD/EDM - Learn more about equine neuroaxonal dystrophy (eNAD) and equine degenerative myeloencephalopathy (EDM) here.

Polysaccharide Storage Myopathy Type 1 (PSSM1) genetic test - Learn more about polysaccharide storage myopathy (including current information about PSSM2 testing) here.

Quarter Horse & Related Breeds Disease Panel (5-panel plus) (If testing is for registration purposes, please contact breed organizations directly.)

Salmonella (also available here) - Learn more about Salmonellosis in horses here.


Vitamin E

Warmblood Fragile Foal Syndrome (WFFS) Type 1 genetic test - Learn more about warmblood fragile foal syndrome here.

Additional Equine Tests

Equine Diagnostic PCR Panels

Available equine diagnostic PCR panels (most also offered as individual tests):

  • Equine Neurological Panel: Equine herpesvirus 1 (quantitative load and genotype), Borrelia burgdorferiSarcocystis neurona, Neospora hughesi/caninum
  • Equine Respiratory Panel: Equine herpesvirus 1, equine influenza A (H3N8), equine herpesvirus 4, Streptococcus equi subsp equi, equine rhinitis A virus, and equine rhinitis B virus
  • Equine Standard GI/Diarrhea Panel: Equine coronavirus, Clostridium difficile toxins A and B, Lawsonia intracellularis, Neorickettsia risticii (Potomac horse fever), Salmonella spp
  • Foal & Neonate GI/Diarrhea Panel:  Clostridium difficile toxins A and B, equine coronavirus, Lawsonia intracellularis, Neorickettsia risticii, Salmonella spp, Cryptosporidium spp, equine rotavirus, Rhodococcus equi, Clostridium perfringens (antigen and toxins CPA, CPB, CPB2, netF, CPE)
  • Equine Vector-borne Panel: Anaplasma phagocytophilum (equine granular ehrlichiosis/anaplasmosis), Bartonella spp, Rickettsia spp, Borrelia burgdorferi
  • Standard Equine Abortion Panel: Amycolatopsis spp, Crossiella equi, Escherichia coli (FhuA gene), equine herpesvirus 1 (genotype and quantitative load), Pantoea agglomerans, Klebsiella pneumoniae, Leptospira spp, Panfungal, Pseudomonas aeruginosa, Streptococcus dysgalactiae subsp equisimilis, Streptococcus equi subsp zooepidemicus
  • Equine Supplementary Abortion Panel: Actinobacillus equuli, equine arteritis virus, Salmonella spp, Staphylococcus aureus (MRSA)

Antibiotics/Anthelmintics (Beta-lactam Screen, Macrolide Endectosides Screen, Praziquantel)

Electron Microscopy (Direct EM, Thin section EM - Fixed tissue, Thin section EM - wax histoblocks)

Equine Chemistry/Toxicology/Pharmacology Tests (Anabolic steroids, NSAIDs, Nutritional Analysis, Nutritional Supplement Testing, Performance Horse Testing, pK Analysis, Pre-purchase drug screen,  Fluixin, Ketoprofen, Phenylbutazone, TCO2, TOBA Protocol testing)

Failure of passive transfer, Immunoglobulin (IGG) quantitation (Radial immunodiffusion (RAD))

Amoebal/Fungal Tests



Coccidiomycosis (valley fever)

Fungi (culture, ID, dermatophyte culture, KOH wet mount), Fungal culture and identificationChlorazol Black KOH Exam (Fungi)

Naegleria fowleri

Bacterial Tests

Avibacterium paragallinarum

Bacteria (aerobic culture, anaerobic culture, bacterial aerobic identification, bacterial anaerobic identification, Gimenez stain from tissue smear), E. coli (ELISA) - K99, MIC Antimicrobial Test, aerobic & anaerobic (blood) culture and sensitivity, Mycobacterium culture and sensitivity, urinalysis


Campylobacter culture


Clostridium (botulinum, chauvoei, difficile, novyi, perfringens, septicum, sordellii) - Learn more about Clostridium perfringens in horses here.

Contagious equine metritis - Learn more about CEM here.

Leptospira (IHC, MAT - L. bratislava, L. canicola, L. grippotyphosa, L., hardjo, L. icterohemorrhagiae, L. pomona, PCR)

Listeria (IHC)

Rhodococcus equi (PCR); R. equi antibody testing (CAHFS) - Learn more about Rhodococcus equi here.

Treponema (foot warts)


Histology (embedded, formalin fixed, biopsy)

Necropsy (post-mortem)

Genetic Tests

Breed-specific genetic testing panels

                Appaloosa Panel 1

                Appaloosa Panel 2

                Arabian Health Panel

                Friesian Health Panel

                Quarter Horse & Related Breeds Disease Panel (5-panel plus) (If testing is for registration purposes, please contact breed organizations directly.)

Equine coat color genetic testing - panels

Equine coat color genetic testing - individual tests

Equine disease genetic testing panels-individual tests

Cerebellar Abiotrophy (CA) genetic test - Learn more about cerebellar abiotrophy in horses here.

Congenital Stationary Night Blindness (CSNB2) genetic test in Tennessee Walking Horses - Learn more about congenital stationary night blindness in horses here.

Connemara Pony Hoof Wall Separation Disease genetic test - Learn more about HWSD here.

Distichiasis genetic test in Friesians - Learn more about distichiasis in Friesian horses here.

Embryo Pre-Implantation Genetic Diagnosis

Equine Familial Isolated Hypoparathyroidism genetic test in Thoroughbreds - Learn more about EFIH here.

Foal immunodeficiency syndrome genetic test. Learn more about FIS here.

Friesian Horse Dwarfism genetic test - Learn more about dwarfism in Friesian horses here.

Friesian Horse Hydrocephalus genetic test - Learn more about hydrocephalus in Friesian horses here.

Glycogen Branching Enzyme Deficiency genetic test - Learn more about GBED here.

Hereditary Equine Regional Dermal Asthenia genetic test - Learn more about HERDA here.

Hyperkalemic Periodic Paralysis genetic test - Learn more about HYPP here.

Junctional Epidermolysis Bullosa genetic test in Belgians - Learn more about JEB1 here.

Lavender Foal Syndrome genetic test - Learn more about LFS here.

Malignant Hyperthermia genetic test - Learn more about MH here.

Multiple Congenital Ocular Anomalies (MCOA) genetic test

Naked Foal Syndrome genetic test in Akhal-Teke

Occipitoatlantoaxial Malformation genetic test - Learn more about OAAM here.

Ocular Squamous Cell Carcinoma genetic test - Learn more about ocular SCC here.

Severe Combined Immunodeficiency (SCID) genetic test - Learn more about severe combined immunodeficiency in horses here.

Skeletal atavism genetic test

Equine performance genetic test

SynchroGait® genetic test

Parasite Tests

Cryptosporidia (ELISA, smear) - Learn more about Cryptosporidiosis in horses here.

Ectoparasite identification

Endoparasite/Ectoparasite identification (Exotic)

Parasites (blood-borne, intestinal, ectoparasites (mites, lice))

Piroplasmosis (Theileria equi, formerly Babesia equi)

Toxoplasma gondii (fecal float, IHCToxoFluor™, CSF Fluid Analysis)

Toxicity/Deficiency Tests

Algae toxicities (Anatoxin-A, Cylindrospermopsin, Domoic Acid, Microcystins, Saxitoxin)

Cobalt confirmation

Fluoride - tissues, bone, hoof

Fungi/mold toxicities (Amanitin, Mycotoxin)


Heavy metals (screen, biopsy, lead - blood, tissue, other, methyl mercury)

Inorganic Compounds (single inorganic compound by request)

Ionophores screen

Monensin in formulated feeds

Nutrition/Trace Elements (chloride, percent fat, fluoride, percent moisture, phosphate, salt screen, selenium, sulfate, vitamin A, vitamin E)

Organic anions

Pesticides (anticoagulant screen, avicides, bromethalin, carbamate, cholinesterase, metaldehyde, neonicotinoid, organochlorine insecticide, organophosphorus insecticide, Paraquat, pyrethrin/pyrethroid, sodium fluoroacetate, strychnine, zinc/aluminum phosphide)

Plant toxicities (alkaloid screen, cyanide, gallotannin (oak), gossypol, grayanotoxins I and III, nitrate/nitrite, oleander glycosides, oxalate, pyrrolizidine alkaloids, strophanthidin)

Speciated arsenic

Sugar alcohols

Toxicology -  bromide, dicumarol, drugs of abuse, glycols, hydrocarbons, inorganic compound, mass spec poison screen, melamine and related compounds, NSAIDS, organic compounds, polychlorinated biphenyls (PCBs), perchlorate, pH, plant identification, unknown exposure (GC/MS screen, LC-MS screen)

Viral Tests

Equine coronavirus - Learn more about equine coronavirus here.

Equine infectious anemia virus - Learn more about EIA here.

Equine rhinitis virus (A&B) - Learn more about equine rhinitis viruses here.

Equine viral arteritis (PCR); equine viral arteritis antibody testing (CAHFS)

Rotavirus qPCRELISA - Learn more about equine rotavirus here

Vesicular stomatitis virus