Rank, From Low to High, The pH of Blood, Stomach Acid, and Urine
The pH scale measures how acidic or alkaline a substance is. The values range from 0 to 14, with 0 representing the most acidic and 14 representing the most alkaline. Normal body pH is slightly alkaline, and the normal range for blood pH is between 7.35 and 7.45.
Blood pH
The normal pH of blood in humans is 7.35 to 7.45. This means that blood is naturally slightly alkaline or basic. Blood pH regularly fluctuates, though it is tightly regulated by the body and any deviation in pH can have serious health implications.
Stomach Acid pH
The pH of stomach acid can vary depending on various factors. Normally, the pH of stomach acid falls between 1.5 and 3.5, which makes it very acidic. The acidic environment of the stomach helps to protect the digestive system.
Urine pH
The normal range of urine pH fluctuates depending on the time of day and diet. Urine is usually slightly acidic in the morning after a night of fasting and becomes increasingly alkaline throughout the day. The normal range of urine pH is 4.6 to 8.0.
Rank from Low to High
The ranking of the pH of these three substances from low to high would be as follows:
- Stomach Acid (pH of 1.5 to 3.5)
- Urine (pH of 4.6 to 8.0)
- Blood (pH of 7.35 to 7.45)