The consistency and influence of environmental and animal factors on exhaled breath condensate hydrogen peroxide, pH and leukotriene B4 in horses

•Exhaled breath condensate (EBC) analysis is a non-invasive method to assess the lower respiratory tract.•Intra- and inter-day consistency for both EBC H2O2 and pH in horses were adequate.•EBC H2O2 was influenced by ambient temperature, humidity, collection location and time of day.•EBC pH was influ...

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