TABLE 06: Hematologic Reference Rangesa

	Conventional (USA) Units SI Units Dog Cat Cow Horse Pig Sheep Goat Llama Vietnamese Potbellied Pig Ostrich PCV (hematocrit) % x 10-2 L/L 37-55 (25-34)b 30-45 (24-34)b 24-46 32-48b 36-43 (26-35)b 27-45 22-38 29-39 36.7-51.4 32.0 Hemoglobin (Hgb) g/dL x 10 g/L 12-18 8-15 8-15 10-18 9-13 9-15 8-12 12.8-17.6 11.1-14.9 12.2 Red blood cells x 106/mL x 1012 g/L 5.5-8.5 5-10 5-10 6-12 5-7 9-15 8-18 11.3-17.5 6.15-8.25 1.7 Reticulocytes % % 0-1.5 0-1 0 0 0-12 0 0       Mean corpuscular volume fL fL 60-77 39-55 40-60 34-58 52-62 28-40 16-25 21-28 46.7-68.0 174.0 Mean corpuscular Hgb pg pg 19.5-24.5 13-17 11-17 13-19 17-24 8-12 5.2-8 43.2-46.6 14.1-22.3 61 Mean corpuscular Hgb concentration g/dL x 10 g/L 32-36 30-36 30-36 31-37 29-34 31-34 30-36   28.4-33.0 33 Platelets x 105/mL x 1011/L 2-9 3-7 1-8 1-6 2-5 2.5-7.5 3-6       White blood cells x 103/mL x 109/L 6-17 5.5-19.5 4-12 6-12 11-22 4-12 4-13 7.5-21.5 18.6-38.2 5.5 Neutrophils (segmented) % x 103/mL % x 109/L 60-70 3-11.4 35-75 2.5-12.5 15-45 0.6-4 30-75 3-6 20-70 2-15 10-50 0.7-6.0 30-48 1.2-7.2 4.6-16 18-63 3.3-24.1 62.6e 3.443 Neutrophils (band) % x 103/mL % x 109/L 0-3 0-0.3 0-3 0-0.3 0-2 0-0.12 0-1 0-0.1 0-4 0-0.8 0 rare 0-0.35 0-1 0-0.4   Lymphocytes % x 103/mL % x 109/L 12-30 1-4.8 20-55 1.5-7 45-75 2.5-7.5 25-60 1.5-5 35-75 3.8-16.5 40-75 2-9 50-70 2-9 1-7.5 24-70 4.5-26.7 34.1 187.6 Monocytes % x 103/mL % x 109/L 3-10 0.15-1.35 1-4 0-0.85 2-7 0.025-0.85 1-8 0-0.6 0-10 0-1 0-6 0-0.75 0-4 0-0.55 0.05-0.8 3-13 0.6-5.0 2.8 0.15 Eosinophils % x 103/mL % x 109/L 2-10 0.1-0.75 2-12 0-0.75 2-20 0-2.4 1-10 0-0.8 0-15 0-1.5 0-10 0-1 1-8 0.05-0.65 0-3.3 1-12 0.2-4.6 0.3 0.02 Basophils % x 103/mL % x 109/L rare rare 0-2 0-0.2 0-3 0-0.3 0-3 0-0.5 0-3 0-0.3 0-1 0-0.12 0-0.4 0 0-0.4 0.2 Myeloid/erythroid ratio     0.75-2.4:1 0.6-3.9:1 0.3-1.8:1 0.9-3.8:1 1.2-2.2:1 0.8-1.7:1 0.7-1.0:1       Plasma proteinsd g/dL x 10g/L 6-7.5 6-7.5 6-8 6-8.5 6-8 6-7.5 6-7.5   5.4-8.5   Plasma fibrinogen g/dL x 10g/L 0.15-0.3 0.15-0.3 0.1-0.6 0.1-0.4 0.2-0.4 0.1-0.5 0.1-0.4 0.1-0.4 0.1-0.4
	aAdapted, with permission, in part from Duncan J.R. and Prasse K.W., Veterinary Laboratory Medicine, 2nd ed., Iowa State University Press, 1986, and from other sources.
	b5- to 6-wk-old pups, kittens; 3- to 45-day-old pigs
	bLower in foals and cold-blooded horses
	eHeterophil
	dLower in young animals

© 2008; Merck & Co., Inc. in cooperation with Merial Ltd. All rights reserved. Disclaimer / Feedback