He had a carboxyhemoglobin level of 64%, or 14% higher than lethal levels, officials said earlier this month, according to ABC News. He was found dead in his hotel room, CNN reported.

OIJ Director Randall Zúñiga reported a carboxyhemoglobin level of 64% in Gardner’s blood, well above the lethal 50% threshold, per a toxicology report finalized April 2. Tests detected 600 parts per ...

Fishwick said some of the students' doctors have found high carboxyhemoglobin levels in their blood, which comes from carbon monoxide exposure.

Superintendent Halterman said they will continue to monitor the building for any further issues, but feel confident there is no connection with the school and elevated carboxyhemoglobin levels.

Although school officials report no signs of carbon monoxide, the Virginia Department of Health found a baseline level of carboxyhemoglobin in Covington itself.

A toxicology report cited this week found Miller's carboxyhemoglobin levels, which is the amount of oxygen-carrying hemoglobin tied up by carbon monoxide, to be 64 percent; federal guidelines for ...

A new toxicology report found the 14-year-old South Carolina boy's body had carboxyhemoglobin level of 64%, which is 14% above what is considered lethal.

A new toxicology report found the 14-year-old South Carolina boy's body had carboxyhemoglobin level of 64%, which is 14% above what is considered lethal.