IDEXX Reference Laboratories

The most complete and advanced menu of diagnostic tests

Directory of tests and services

Discover more diagnostic options for faster, more accurate diagnoses. This interactive directory lets you look up test codes, compare panels, and see what’s included with different tests. 
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Expanded cancer diagnostics at IDEXX Reference Laboratories

Get the support you need when there’s no time to waste.

Comprehensive diagnostic portfolio from cancer identification to treatment monitoring

Personalized guidance from the largest global network of veterinary pathologists and medical consultants

Expanded pathology insights with VetConnect PLUS

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Order from IDEXX Reference Laboratories

Convenient, flexible service, and delivery options

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  • Daily courier and late pickup in most major metro areas and, in areas without courier service, the option to submit specimens using UPS or FedEx give you the ultimate convenience 
  • Results by 8:00 a.m. next day with routine tests
  • Fast, accurate electronic test ordering via Cornerstone Software or other practice management systems
  • Receive patient results online with VetConnect PLUS, by email, by automatic download to Cornerstone Software or other practice management systems, or by fax

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Turnaround times—Results delivery at a glance

(chemistry, CBC, coagulation, urinalysis, total T4)

Pickup time Results delivery
Morning 6:00 p.m. same day
Afternoon/evening 8:00 a.m. next morning

(Lab 4Dx Plus Test, heartworm antigen, FIV, and FeLV ELISAs)

Pickup time Results delivery
All times 8:00 a.m. next morning

(Giardia, hookworm, roundworm, and whipworm antigens)

Pickup time Results delivery
All times 8:00 a.m. next morning
Pickup time Results delivery
All times 8:00 a.m. next morning
Pickup time Results delivery
All times

3–5 working days (Standard)
1–2 working days (Priority)

Test name Test components Receive results
Large/Complex/Whole Organ Biopsy

Evaluation of whole organs (with or without bone) or large and complex biopsies. Specimen examples include entire spleen, heart, brain; complex mammary chain; bone biopsies (excluding core needle or punch biopsies <5 mm); amputated digits or limbs; amputated jaw.

5–14 days, depending on need for additional fixation or decalcification


Note: Specimens, including teeth, may take up to 21 days due to need for decalcification.

Priority Biopsy

1 Site/Lesion

1–3 days
Standard Biopsy

1 Site/Lesion

3–5 days

Learn more about a specific product or service.

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  1. Nabity MB, Lees GE, Boggess M, et al. Symmetric dimethylarginine assay validation, stability, and evaluation as a marker for early detection of chronic kidney disease in dogs. J Vet Intern Med. 2015;29(4):1036–1044.
  2. Hall JA, Yerramilli M, Obare E, Yerramilli M, Jewell DE. Comparison of serum concentrations of symmetric dimethylarginine and creatinine as kidney function biomarkers in cats with chronic kidney disease. J Vet Intern Med. 2014;28(6):1676–1683.
  3. Hall JA, Yerramilli M, Obare E, Yerramilli M, Almes K, Jewell DE. Serum concentrations of symmetric dimethylarginine and creatinine in dogs with naturally occurring chronic kidney disease. J Vet Intern Med. 2016;30(3):794–802.
  4. Data on file at IDEXX Laboratories, Inc. Westbrook, Maine USA.
  5. Elsemore DA, Geng J, Flynn L, Cruthers L, Lucio-Forster A, Bowman DD. Enzyme-linked immunosorbent assay for coproantigen detection of Trichuris vulpis in dogs. J Vet Diagn Invest. 2014;26(3):404–411.
  6. Goldstein RE, Eberts MD, Beall MJ, Thatcher B, Chandrashekar R, Alleman AR. Performance comparison of SNAP 4Dx Plus and AccuPlex4 for the detection of antibodies to Borrelia burgdorferi and Anaplasma phagocytophilum. Int J Appl Res Vet Med. 2014;12(2):141–147.
  7. Eberts MD. Performance of SNAP 4Dx Plus and AccuPlex4 in dogs with different heartworm burdens. Int J Appl Res Vet Med. 2013;11(1):7–9.
  8. Liu J, Drexel J, Andrews B, Eberts M, Breitschwerdt E, Chandrashekar R. Comparative evaluation of two in-clinic assays for vector-borne disease testing in dogs. Top Comp Anim Med. 2018;33(4):114–118.
  9. Geddes RF, Elliott J, Syme HM.  Relationship between Plasma Fibroblast Growth Factor-23 concentration and Survival Time in Cats with Chronic Kidney Disease.  J Vet Intern Med. 2015;29:1494-1501.
  10. Finch NC, Geddes RF, Syme HM, Elliott J.  Fibroblast Growth Factor 23 (FGF-23) Concentrations in Cats with Early Nonazotemic Chronic Kidney Disease (CKD) and in Health Geriatric Cats.  J Vet Intern Med.  2013;27:227-233


†All times are local to the submitting practice. Results delivery is based on working days (Monday–Friday). For IDEXX-Direct service (FedEx), times are central time. Specimens submitted for routine tests on Saturday using the IDEXX-Direct service will have results delivered on Monday. Specimens submitted for routine tests using a Saturday courier service will receive next-day results.

‡Cytology priority requests submitted on Friday are reported on Monday.

Note: There may be times when weather or operational considerations cause delays in providing test results. When this happens, we will inform you as quickly as possible with the most complete information available.

PCR testing is a service performed pursuant to an agreement with Roche Molecular Systems, Inc.