| Carboxyhemoglobin has a characteristic cherry-red colour. |
| It enters the bloodstream through the lungs and forms carboxyhemoglobin, a compound that inhibits the blood's capacity to carry oxygen to organs and tissues. |
| The toxicological tests for ethanol and carboxyhemoglobin were entirely negative. |
| The level of change is approximately equal to the amount of carboxyhemoglobin or methemoglobin present. |
| The most characteristic sign of CO poisoning is a cherry color of the skin and mucous membranes due to the bright red color of carboxyhemoglobin. |
| Those with carbon monoxide poisoning receive 100 percent oxygen until their blood level of carboxyhemoglobin falls below 20 percent. |
