The most frequently observed laboratory abnormalities in this study were a decreased A:G ratio (≤ 0.5) in 89.47% (561/627) of cats, elevated globulin levels in 86.92% (545/627), reduced albumin levels in 73.68% (462/627), anemia in 57.9% (363/627), lymphopenia in 50.88% (319/627), and thrombocytopenia in 43.22% (271/627). Here, ALB is linked to lymphopenia.