Primary anal fissure is usually diagnosed and confirmed by clinical history and physical examination.<unk>  findings are needed to rule out the causes of secondary anal fissures e.g. Crohn's disease, tuberculosis, sarcoidosis, and HIV which include lymphocytosis, Enzyme linked immunosorbent assay (ELISA).
Anal fissure laboratory findings
Infectious colitis laboratory findings
Anal fissure risk factors
Colon polyps laboratory findings
Anal fissure physical examination
Urethritis laboratory findings
Anal fistula classification
Otitis externa laboratory findings