Complete blood cell counts and qualitative analysis of blood cells are some of the most common diagnostic tests used by veterinarians.

Just a few of the many uses for hematology include diagnosing and monitoring anemia and looking for signs of inflammation, infection, cancers such as leukemia, and many other ailments.

Since blood tests are so crucial to the diagnostic plan for many ill patients and are often included in baseline testing for well patients, choosing the right machine for your practice’s needs is an important decision.

Why Choose an In-House Hematology Analyzer?

When it comes to blood cell analysis, veterinarians have the option of doing tests in-house or sending samples out to a lab. Each method offers its own advantages, and some vets even use a combination of both. 

For example, when a sample is sent to an outside lab, there is usually the advantage of a specialist doing the qualitative/differential analysis. With in-house analyzers, it’s a good idea to include blood smears for increased accuracy and to look at cell morphology.

A veterinarian or their nurses can gain this skill through practice. However, a specialist may be able to detect subtle changes to blood cells that a general practitioner might not notice since the specialist looks at blood cells all day long. And, they can often confidently differentiate between artifacts and pathology when looking at cells on a blood smear.

On the other hand, the in-house analysis offers a lot of conveniences.

Sometimes, a veterinarian needs an answer quickly in order to start treating an ill patient right away. And worried pet owners might want answers as soon as possible.

Plus, depending on the specific contract the veterinarian has entered into, an in-house machine might allow the practice to keep a higher percentage of the profits with each lab test performed.

What Should a Veterinarian Consider When Choosing an In-House Hematology Analyzer?

Here are a few important considerations before making a purchase…

• Brand preference. Maybe a veterinarian or their team has had a good experience with a particular brand. Or, if the company has any additional equipment or tests (such as snap tests) the practice is also interested in, maybe it would be possible to negotiate a better deal for everything together.

• Contracts. Sometimes, particularly when equipment is heavily discounted, there may be “strings” attached, such as a requirement to perform a certain number of tests per month (and a penalty for not doing so). It’s always important to check the contract closely when making a purchase. 

• Costs. Obviously, the cost of the analyzer itself should be considered. But remember to also factor in the costs of supplies (rotors, reagents, etc.) and the cost of each test relative to the cost to the client.

• Machine specifics. How fast are the results? How much blood is needed to run each test? Which species can be tested? And how are results added to a patient’s medical record?

• Ease of operation. Is the machine simple and intuitive to use? Is training provided by the company that sells the machine?

• Warranty and maintenance. Ask if there is a warranty included, what it covers, how long it’s good for, and if there’s an option to renew it once it runs out. Also, find out about routine maintenance costs, if there’s a helpline available if you have questions, and how fast an issue with the machine can be repaired/resolved.

• “Real world” performance. Ask around and see if any colleagues in your area use the equipment, and see what their experience has been. Or, see if the company will let you use the equipment on a short trial period before buying.

IDEXX, Abaxis, and Heska

These three companies are popular choices for veterinary practices. Here are the stated advantages of highlighted analyzers from each company…

IDEXX ProCyte Dx Hematology Analyzer

IDEXX claims to have the industry’s most comprehensive CBCs (27 whole blood parameters plus fluid analysis options, with 17 species capabilities), with reference lab-quality results. They advertise dot plots with each in-house CBC report and extra help such as differential diagnoses and access to board-certified consultants at no charge. Results take two minutes.

Noted special capabilities include detecting band neutrophils and nucleated red blood cells, and including a reticulocyte count.

Abaxis VetScan HM5 Hematology Analyzer

This Abaxis machine reports 22 parameters in less than four minutes, including histograms. The company advertises compatibility with select practice management systems, ease of use, and minimal, quick maintenance with automated cleaning reminders.

Another benefit may be the small sample size requirement of just two drops of whole blood. It has capabilities for 15 species, as well as fluid analysis options. One noted special capability is a direct eosinophil count.

Heska HemaTrue Hematology Analyzer

Heska notes this machine can deliver accurate, reproducible results in 55 seconds, using just 20uL (about one drop) of blood. Results include 17 parameters and histograms. The color touchscreen interface is noted to be simple to navigate, with several species options.

The HemaTrue has daily automatic cleaning and quality control. The company states veterinarians have options such as a free analyzer use, low test prices compared to competitors and a free warranty. One additional advantage is a built-in blood tube mixer.

Keep in mind that there are different analyzer models available from each company that have varying specifications and that details may change over time. So always confirm the specifics before making a purchase.

There’s no one right machine that’s a fit for every veterinary practice. Instead, look at your practice’s individual needs and budget to find the hematology analyzer that’s the best fit for your team and for meeting the needs of your patients and clients.

Written by: Dr. Tammy Powell, DVM