The following chemical tests is used on the esophagus

Bernstein's test is used to demonstrate reflux esophagitis. It is also called acid perfusion test

• Esophageal acidity test

Other non chemical tests include

• Barium swallow

• Esophageal motility test

• Upper gastrointestinal endoscopy

• Cytological examination

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Chemical studies for pancreatic disease

• Serum amylase

• Serum lipase

• Urine amylase

• Secretin test

Other non chemical tests

• Endoscopic retrograde pancreatography

• Abdominal ultrasonography

• Hypotonic duodenography

• Computerized axial tomography

• Abdominal angiography

• Abdominal MRI

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