Renal tubules can raise blood pH?

Renal tubules can raise blood pH primarily through the reabsorption of bicarbonate (HCO3-) and the excretion of hydrogen ions (H+). When bicarbonate is reabsorbed in the proximal tubule, it helps neutralize acids in the blood, thereby increasing pH. Additionally, the secretion of hydrogen ions into the urine allows for further regulation of acid-base balance, contributing to a higher blood pH. This process is crucial for maintaining homeostasis in the body's acid-base balance.