Physiology Haldane effect is: A Effect of O2 on CO2 carriage in blood B Effect of CO2 on O2 carriage in blood C Effect of PCO2 on CO2 carriage in blood D Effect of pH on oxygen carriage in blood 💡 Explanation Haldane effect is: ✓ Correct Answer: A. Effect of O2 on CO2 carriage in blood