Cytology, an integral part of in-house diagnostic services, plays a crucial role in identifying cellular abnormalities and diagnosing various conditions. Utilizing specialized microscopic techniques, cytology enables the examination of cells from diverse bodily sources such as skin lesions, ear secretions, and internal organs. Its application extends to assessing intestinal parasites, providing insights into infectious diseases like Lyme and ana-plasma, and screening for feline leukemia and immunodeficiency viruses. As part of the broader diagnostic repertoire, cytology contributes significantly to the provision of timely and accurate medical care to patients.