Table 1.
New haematological reference intervals (RIs) established in 81 adult Maine Coon blood donor cats reported according to the Clinical and Laboratory Standards Institute and American Society of Veterinary Clinical Pathology guidelines.15,16 In three blood samples, leukocyte differential count was obtained by microscopic blood smear examination
| Analyte | Mean | SD | Median | Min | Max | RI | Lower reference limit 90% CI | Upper reference limit 90% CI |
|---|---|---|---|---|---|---|---|---|
| RBC-I (1012/l) | 6.4 | 0.9 | 6.4 | 3.96 | 8.65 | 4.6–8.5 (1S) | 4.0–5.0 | 8.2–8.7 |
| Haemoglobin (g/l) | 148 | 8 | 147 | 128 | 171 | 133–163 | 128–136 | 161–171 |
| Haematocrit (l/l) | 0.41 | 0.30 | 0.42 | 0.37 | 0.48 | 0.37–0.48 | 0.37–0.38 | 0.46–0.48 |
| MCV (fl) | 48.5 | 4.3 | 48.0 | 39.0 | 61.0 | 41.1–59.0 (2S) | 39.0–42.0 | 55.9–61.0 |
| MCH (pg/cell) | 13.6 | 0.7 | 13.5 | 12.0 | 15.8 | 12.2–15.8 (5S, 2R) | 12.0–12.5 | 15.2–15.8 |
| MCHC (g/l) | 33.7 | 2.5 | 33.3 | 28.5 | 40.2 | 29.1–40.0 (5S) | 28.5–30.0 | 38.6–40.2 |
| WBC (109/l) | 9.7 | 2.4 | 9.4 | 5.3 | 16.7 | 5.7–15.6 (1S) | 5.3–5.9 | 13.5–16.7 |
| Neutrophils (109/l) | 6.3 | 1.7 | 6.2 | 3.3 | 11.4 | 3.4–10.8 | 3.3–3.9 | 8.9–11.4 |
| Eosinophils (109/l) | 0.3 | 0.2 | 0.3 | 0.0 | 0.7 | 0.0–0.7 | 0.0–0.1 | 0.6–0.7 |
| Lymphocytes (109/l) | 2.5 | 0.8 | 2.3 | 0.8 | 5.6 | 1.1–4.6 (1S) | 0.8–1.5 | 4.0–5.6 |
| Monocytes (109/l) | 0.5 | 0.2 | 0.5 | 0.1 | 1.1 | 0.2–1.0 (2S,1R) | 0.1–0.2 | 0.8–1.1 |
| PLT-I (109/l) | 200.0 | 76.4 | 178.0 | 58.0 | 398.0 | 85.0–385.0 (3S) | 58.0–93.0 | 351.0–398.0 |
| Reticulocytes (%)* | 1.4 | 0.8 | 1.3 | 0.1 | 4.6 | 0.2–3.3 (1S) | 0.1–0.5 | 2.9–4.6 |
| Reticulocytes (109/l)* | 88.1 | 55.6 | 73.3 | 6.7 | 295.8 | 11.3–250.0 (4S) | 6.7–28.9 | 200.6–295.8 |
(nS) indicates the number of suspected outliers present according to Tukey, (nR) indicates the number of far outliers identified according to Tukey or Dixon and removed. The sample size for each analyte is large enough to compute the non-parametric RI. The confidence intervals (CIs) of the limits of the non-parametric RI were determined using a bootstrap method
Manual count, only aggregate reticulocytes counted
RBC-I = red blood cell count by impedance measurement; MCV = mean cell volume; MCH = mean corpuscular haemoglobin; MCHC = mean corpuscular haemoglobin concentration; WBC = white blood cells; PLT-I = platelet count by impedance measurement