Firstly, we can use physical examination to check. Acute cholecystitis will show tenderness in the upper right abdomen. If pressing below the right ribs causes significant pain, it is likely to be acute cholecystitis. Secondly, instrument examination can be utilized, with the most common and cost-effective being an ultrasound examination. When examining cholecystitis, fasting is required; no food should be consumed for at least eight hours. Additionally, modern CT scans or MRI can be used to help determine whether there is inflammation in the gallbladder. Blood tests can also be conducted; an increase in white blood cells in a routine blood test can indicate the presence of inflammation.