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What is the pH of the stomach?

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Quick Answer

The pH of the stomach ranges between 1 and 5, according to About. The exact pH of the stomach varies according to the types and quantities of food that have been eaten recently.

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About states that the pH of the stomach is lowest in the morning before a person eats breakfast and highest after a person eats a meal high in protein. Lower pH values indicate that the fluid in the stomach is more acidic. A stomach acid test measures the acidity of an empty stomach, according to MedlinePlus, which advises that the normal result of this test is a pH between 1.5 and 3.5.

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