Ear cytology is the examination of a thin layer of discharge samples from the ears under the microscope to identify parasites, yeast, and bacteria.

Fresh samples are taken separately from each ear. To assess for parasites (most commonly ear mites in cats), smear the discharge on the slide, add a couple of drops of mineral oil. Examine the sample under a microscope for the mites.

Another sample is then smeared, heat-fixed and stained with special dyes and examined under the microscope to identify cells, bacteria, and yeast.

Ear cytology allows for the detection of mites, bacteria or yeast, this will enable the vet to decide on the appropriate treatment plan.