Affiliation:
1. Laboratory of Clinical Pathology, College of Veterinary Medicine Seoul National University Seoul Republic of Korea
2. BK 21 FOUR Program for Future Veterinary Medicine Leading Education and Research Center, College of Veterinary Medicine Seoul National University Seoul Republic of Korea
3. Research Institute for Veterinary Science, College of Veterinary Medicine Seoul National University Seoul Republic of Korea
Abstract
AbstractBackgroundEvaluating regeneration is essential for the classification and differential diagnosis of anemia in dogs. Early detection of regeneration is challenging in anemic dogs.ObjectivesThis study assessed the value of immature reticulocyte fraction (IRF) in differentiating preregenerative anemia (PRA) from nonregenerative anemia (NRA) in dogs.AnimalsNinety‐four dogs: 49 controls and 45 with anemia.MethodsCase‐control study. Fractions of low‐, medium‐ (MFR), and high‐fluorescence reticulocytes (HFR), were measured using the ADVIA 2120i hematology analyzer. The IRF was calculated as the sum of percentages of MFR and HFR. Data from dogs with regenerative anemia (RA, n = 19), PRA (n = 11), and NRA (n = 15) were retrospectively analyzed. The value of IRF was compared with reticulocyte production index (RPI) using the receiver operating characteristic (ROC) curve.ResultsThe median of IRF was significantly higher in dogs with RA (46.5%; range, 40.9‐53.6%; P < .001) and PRA (40.6%; range, 27.7‐47.1%; P = .01) than in controls (22.1%; range, 16.9‐29.3%). The IRF in dogs with PRA showed no difference compared to dogs with RA (P > .99) but was higher than dogs with NRA (18.7%; range, 8.8‐24%; P = .00). The area under the ROC curve of IRF was superior to that of RPI (0.897 vs 0.818, P = .00) in differentiating dogs with PRA from NRA.Conclusions and Clinical ImportanceThe IRF is a reliable variable for detecting early regeneration in anemic dogs without reticulocytosis. The study suggests that the measurement of IRF could be useful in classifying anemic dogs.
Funder
National Research Foundation of Korea
Cited by
2 articles.
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