Q. What is the pH level of blood of a normal person?
Answer: 7.35-7.45
Notes: The pH of human arterial blood in a healthy individual is tightly regulated at 7.35–7.45 to maintain acid-base homeostasis. This slightly alkaline range ensures optimal enzyme function, oxygen transport, and cellular metabolism. Values below 7.35 indicate acidosis, while above 7.45 signal alkalosis, both potentially life-threatening if uncorrected.