Physiology An increase in the concentration of 2-3 Biphosphoglycerate (2, 3 DPG) may be seen in all of the following except. A Anemia B Hypoxia C Inosine D Hvpoxanthine 💡 Explanation An increase in the concentration of 2-3 Biphosphoglycerate (2, 3 DPG) may be seen in all of the following except. ✓ Correct Answer: D. Hvpoxanthine