• Full blood count- to look for signs of anemia
• X-ray Chest- This shows dilatation of esophagus as a shadow behind the heart. Presence of a slight gastric bubble may be observed rarely.
• Barium swallow- This imaging study is done by asking patient to drink a contrast solution which will help visualize the esophagus. Barium swallow shows dilated esophagus, bird beak appearance due to narrowing of distal esophagus.
• Endoscopy- The entire esophagus and stomach is visualized through a camera chip attached to a scope as it goes down the oral cavity till the stomach. This test is more indicated if cancerous condition arises as a possibility. Biopsy samples are also removed during this procedure for malignant suspects.
• Manometry of esophagus- This test detects amount of pressure in the lower esophageal sphincter which is high; incomplete relaxation of LES is observed in Achalasia cardia achalasia cardia with absence of esophageal peristalsis in studies confirming the diagnosis.