Why can't I drink water for physical examination? To analyze the reasons of fasting and drinking before physical examination.

Drug examination is often needed in physical examination. Drinking water will affect the absorption and metabolism of drugs, thus affecting the accuracy of drug examination. For example, some drugs need to be tested on an empty stomach, and drinking water will cause the drugs to be diluted, which will affect the test results. Ensure the accuracy of drug testing.

3. Avoid affecting the stomach examination

1. Avoid misdiagnosis

Drug examination is often needed in physical examination. Drinking water will affect the absorption and metabolism of drugs, thus affecting the accuracy of drug examination. For example, some drugs need to be tested on an empty stomach, and drinking water will cause the drugs to be diluted, which will affect the test results. Ensure the accuracy of drug testing.