- Do this test on an empty stomach.
- Mix 1/4 teaspoon of baking soda (not baking powder) with 200ml of water.
- Drink it and note the time and how long it takes to burp
- If you don't burp within five minutes, stop timing.
- A normal stomach acid level should cause a burp within two minutes.
- If you don't burp after five minutes, your stomach acid may be low.
