Additionally, white blood cells (WBCs) and platelets can change within hours due to acute infectious diseases. Abnormal glucose levels can increase anesthetic risk and differ markedly between fasted and non-fasted samples, breeds, age, and sick and healthy patients. Evaluating electrolytes, hematocrit and total protein in fasted patients is essential for monitoring during anesthesia, minimizing the risk of arrhythmias and hypotension, and facilitating patient recovery.