Does drinking water affect blood routine?

If you drink water before the morning check-up, there is still an effect on blood routine. Drinking a small amount of water generally has little effect, and the test values may not show obvious abnormalities. However, if we drink more water before the morning physical examination, it will dilute our blood and form a diluted state. All the cells examined, including hemoglobin, red blood cells, white blood cells and other indicators, may show a slightly lower value than normal. Therefore, I suggest that if we drink less water in the morning or do not drink water before the physical examination,