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. Author manuscript; available in PMC: 2014 Jan 9.
Published in final edited form as: J Vet Diagn Invest. 2012 May 29;24(4):10.1177/1040638712445770. doi: 10.1177/1040638712445770

Table 1.

Reported normal values for serum osmolality in various species.*

Species Osmometry n Mean SD
Dog (Canis lupus familiaris) FPO and VPO 100 303 6
Cat (Felis silvestris catus) FPO and VPO 100 324 16
Horse (Equus ferus caballus) FPO and VPO 100 292 5
Manatee (Trichechus manatus)15 VPO 6 310.2 2.2
Rat (Rattus norvegicus)5 FPO 16 294 1.4
Hispaniolan Amazon parrot (Amazona ventralis)1 VPO 20 326 6.9
*

Values are reported in mOsm/kg. SD = standard deviation; FPO = freezing point osmometer; VPO = vapor pressure osmometer. Dog, cat, and horse values were obtained by personal communication with the University of Florida, Veterinary Diagnostic Laboratory, Clinical Pathology Service.