The common gastric tests include fecal occult blood test, stool culture, imaging tests, barium beefsteak meal, colorectal transit study, computed tomography scan (ct or cat scan), defecography, lower gi (gastrointestinal), magnetic resonance imaging (MRI), mrcp, radioisotope gastric-emptying scan, ultrasound, upper gi (gastrointestinal) series, anorectal manometry, gastric manometry, esophageal manometry etc.