To correlate the acute appendicitis between clinically diagnosed, radiological evaluation and histopathologically examined specimen and the role of total count, differential count and CRP in early diagnosis of acute appendicitis in patients admitted in AIMSR. An observational study is conducted in the patients visiting AIMSR OPD and emergency over the period of one and half year as the diagnosed case of appendicitis. And the data is collected from the onset of the symptoms till the discharge of the patient for any intra operative or postoperative complication. The diagnostic criteria used in all the cases is USG along with Alvarado score. The Alvarado scoring system combined with ultrasound can be used as a cheap and inexpensive way of conrming acute appendicitis and also reducing negative appendicectomy rate. Ultrasonography increases the diagnostic accuracy in patients with suspected acute appendicitis to the tune of 90-95%.