Clinical evaluation of the CA530-VET hematology analyzer for use in veterinary practice.

This study evaluates the capabilities and accuracy of the CA530-VET hematology analyzer, a machine that analyzes various blood parameters in animals, in veterinary practice. It found the device generally accurate and useful, although not ideal for all tests and animal species.

Research Methodology

• The research involved testing the CA530-VET hematology analyzer was on several parameters including blood carry-over, precision, and accuracy.
• To ascertain these characteristics, the analyzer was compared against established methods for blood count such as the CELL-DYN 3500, microhematocrit centrifugation, manual platelet (PLT) counting for felines and equine species, and a 100-cell manual WBC differential.
• Blood samples used for comparative study were obtained from 242 dogs, 166 cats, and 144 horses.

Results

• The results indicated low carry-over ratios for RBC, PLT, WBC and HGB concentration. This implies that the analyzer performs well ensuring that remains of one test do not affect the following.
• Most measured parameters for precision and duplicate measurement showed results that were within acceptable limits, except for platelet counts in cats (8.7%) and horses (9.5%).
• The analyzer was in excellent agreement with other methods for WBC count in dogs and horses, RBC count in horses, and HCT results in horses. It also showed sufficient accuracy for RBC counts in dogs and cats, and for HGB concentration and MCV in all three species. However, the accuracy of feline WBC counts, especially those in the subnormal and normal range, and leukocyte differentials, except for granulocytes, was not satisfactory.
• In all three species, the study found notable discrepancies between the platelet counts obtained mechanically via the analyzer and those counted manually. The study also found large differences in the counts for lymphocytes and “mid-sized cells” between the CA530-VET and manual differential technique.

Conclusions

• The researchers concluded that the CA530-VET is useful for routine analysis of canine, feline, and equine blood cells.
• However, they recommended caution while using it for platelet counts, feline total WBC counts in the subnormal and normal range, and leukocyte differentials, barring granulocytes – as it may not provide accurate results in these cases.