Cherry red color observed in forensic cases is due to which gas?

Cherry red color observed in forensic cases is due to which gas?

• A. Carbon monoxide
• B. Hydrogen sulfide
• C. Nitric oxide
• D. Oxygen

Answer: (A)

Cherry red coloration in forensic cases comes from carbon monoxide binding to hemoglobin to form carboxyhemoglobin. Carbon monoxide has a much higher affinity for hemoglobin than oxygen, so it displaces oxygen and the blood takes on a bright red hue. This distinct cherry-red appearance is a hallmark of CO poisoning and is not produced by the other gases listed.

Cherry red coloration in forensic cases comes from carbon monoxide binding to hemoglobin to form carboxyhemoglobin. Carbon monoxide has a much higher affinity for hemoglobin than oxygen, so it displaces oxygen and the blood takes on a bright red hue. This distinct cherry-red appearance is a hallmark of CO poisoning and is not produced by the other gases listed.