Lab Tests Online - Explaining Pathology

Glossary

Acid-base balance


Normal equilibrium between acids and alkalis (bases) in the body is maintained by buffer systems in the blood and the regulatory activities of the lungs and kidneys in excreting wastes to prevent build-up of excessive acids (acidosis) or alkalis (alkalosis) in the blood and other tissues. With a normal acid-base balance in the body, the blood is slightly alkaline, registering 7.35-7.45 on the pH scale (where 7 is neutral and above 7 alkaline).