Anorectal abscesses can be identified through physical examinations, imaging studies, and laboratory tests. A physical examination is typically the first step, which includes looking at the area around the anus and rectum, feeling for tenderness, and inspecting the area for any visible growths. Imaging studies, such as an X-ray or CT scan, can help identify the size and location of the abscess, as well as any associated complications. Laboratory tests, such as blood tests and stool samples, are also used to diagnose an anorectal abscess. These tests can help determine the presence of infection and the type of bacteria causing it. Additionally, a doctor may also order anoscopy or sigmoidoscopy to further examine the area and confirm the diagnosis.