How would you respond to the accused suspects denial of having blood type identified since he has proof that had just received a transfusion with o blood?

While it is true that receiving a blood transfusion can temporarily change the apparent blood type of an individual, it does not permanently alter their underlying blood type.

When a person receives a blood transfusion, the transfused blood cells circulate in the recipient's bloodstream and can be detected in various tests, including blood typing. This means that immediately after a transfusion, the recipient's blood sample may show the blood type of the donated blood rather than their own. However, this effect is temporary, and over time the recipient's own blood cells will replace the transfused blood cells.

The duration for which transfused blood cells remain detectable in the recipient's bloodstream can vary but typically lasts for several weeks. After this period, the recipient's original blood type will be restored, and serological tests will accurately reflect their underlying blood group.

Therefore, the fact that the accused suspect received a transfusion with O blood does not definitively disprove their original blood type. To determine their true blood type, a blood sample should be collected after sufficient time has passed for the transfused blood cells to be cleared from circulation, ensuring an accurate identification of their underlying blood group.