| Myasthenia Gravis (Acetylcholine Receptor Antibody) (IDEXX) | | Serum (preferred) or heparinized plasma | Canine, Feline |
| Mycoplasma hyopneumoniae MFIA (Biovet) | | Serum |
| Mycoplasma sp. Identification by gene squencing (RO) | | Genetic material |
| Neospora sp. Antibody IFA (IDEXX) Canine | | Serum | Canine |
| Neospora spp. PCR (IDEXX) | | CSF |
| Non-esterified fatty acids (NEFA) (Guelph) | | Serum or EDTA plasma - 0.5 mL |
| Osmolality (RUH) | | Li-Heparin Plasma (preferred sample), serum, misc fluid and urine |
| Pancreatic Lipase Immunoreactivity (PLI) (Health Gene) | | Serum | Canine, Feline |
| PARR (PCR for Antigen Receptor Rearrangements) (Colorado) | | EDTA whole blood, lymph node or other organ fluid, cavity fluid, CSF |
| PCV2 (2a/2b/2d/2e) & PCV3 qPCR (Biovet) | | Serum | Porcine |
| PCV2 Ab IgG ELISA (Biovet) | | Serum |
| PMSG (Pregnant Mare’s Serum Gonadotropin) (Biovet) | | Serum |
| Potassium Bromide (Université of Montréal) | | Serum | Canine, Equine |
| Potassium Bromide / Phenobarbital Combo (Université of Montréal) | | Serum |
| Potomac Horse Fever (Neorickettsia risticii) RealPCR (IDEXX) | | EDTA whole blood - 2 mL or feces - 5 grams (minimum - 1 gram) | Canine, Equine |
| Premium Canine Thyroid Profile (Michigan) | | Serum | Canine |
| Prescottella (Rhodococcus) equi RealPCR (IDEXX) | | Tracheal wash - 5 - 10 mL, feces - 5 grams | Equine |
| Protein Electrophoresis (Guelph) | | Serum - 0.5 mL; urine - 50 mL |
| PRRSV Type 1 & 2 Ab MFIA (Biovet) | | Serum | Porcine |
| Psittacine Beak and Feather Disease PCR DNA (Health Gene) | | EDTA or heparinized whole blood - 0.2 mL, or feathers |
| PTH (Hypercalcemia) Malignancy Profile (IDEXX) | | Serum - 1.5 mL and EDTA plasma | Canine, Feline |
| PTH (Parathyroid Hormone) and Ionized Calcium (IDEXX) | | Serum | Canine, Equine, Feline |
| PTHrP (Parathyroid Hormone Related Protein) (IDEXX) | | EDTA plasma | Canine, Equine, Feline |
| Pug Dog Encephalitis, Susceptibility (IDEXX) | | EDTA whole blood - 3 - 5 mL or Buccal Swab (cytology brush) - 2 - 3 required | Canine |
| Rabies Micro RFFIT Screen Titer (IDEXX) | | Serum | Canine, Feline |
| Rabies Titer FAVN – For Export (IDEXX) | | Serum | Canine, Feline |
| Relaxin (IDEXX) | | Serum or plasma (EDTA or Heparin) |
| Respiratory Disease (CRD) RealPCR Panel (Comprehensive) (IDEXX) | | Deep pharyngeal swab (with visible organic material on swab) and a conjunctival swab (wipe eye clean, swab inside eyelid). | Canine |
| Rickettsia PCR (Vector Borne) | | EDTA whole blood and serum (if available) | Canine, Feline |
| Rickettsia rickettsii IFA (Michigan) | | Serum | Canine, Equine |
| Rickettsia rickettsii PCR (Michigan) | | EDTA whole blood - 2 mL or tick in sterile container |
| Ringworm (Dermatophyte) RealPCR Panel (IDEXX) | | A minimum of 10-20 plucked hair with follicles and skin scrapings from active border of lesion, nails with nail bed scrapings or aspirated purulent material
Collect prior to antifungal treatment or at least 2 weeks after withdrawal of these medications. | Canine, Feline |
| Rocky Mountain Spotted Fever (Rickettsia Spp.) PCR (IDEXX) | | EDTA whole blood | Canine |
| Rotavirus/Coronavirus PCR (Guelph) | | Live: feces, rectal swab. Dead: feces. | Equine |
| SDMA (IDEXX) | | Serum, lithium heparin or EDTA plasma | Canine, Equine, Feline |
| Streptococcus equi subsp. equi (Strangles) Antibody ELISA (IDEXX) | | Serum |
| T3 (Health Gene) | | Serum |
| Taurine (IDEXX) | | Heparinized plasma - 1 mL or urine - 5 mL | Canine, Feline |
| Testosterone (RIA) baseline (Biovet) | | Serum | Caprine, Equine, Feline |
| Testosterone Stimulation hCG (Biovet) | | 2 Serum samples | Canine, Equine, Feline |
| Testosterone Stimulation hCG (IDEXX) | | 2 Serum samples | Canine, Equine, Feline |
| Thyroglobulin Autoantibody – Canine (IDEXX) | | Serum | Canine |
| Thyroid Mini Profile – Canine (IDEXX) | | Serum | Canine |
| Thyroid OFA Registry – Canine (IDEXX) | | Serum | Canine |
| Thyroid Panel – Feline (IDEXX) | | Serum | Feline |
| Thyroid Profile 1 – Canine (IDEXX) | | Serum | Canine |
| Thyroid Profile 1 – Equine (Guelph) | | Serum | Equine |
| Thyroid Profile 2 – Canine (IDEXX) | | Serum | Canine |
| Thyroid Profile 6: T3, T4, FT4ED, T4AA, TSH, TgAA (Antech) | | Serum | Canine, Equine, Feline |
| Thyroid Profile Diagnostic – Canine (Michigan) | | Serum | Canine |
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