State and federal health officials found industrial compounds in the bloodstreams of people living near a North Carolina chemical plant, just not the much-debated and little-studied one they sought.

North Carolina’s health agency said Tuesday 30 people living around a Chemours Co. plant south of Fayetteville were tested, and none of them showed the chemical GenX in their blood or urine. Everyone had in their blood at least four of the 16 related chemicals tested.

Scientists don’t know how much may be unsafe.

Seven of the chemicals showed up in blood concentrations beyond 95 percent of the population tested by the U.S. Centers for Disease Control and Prevention.

Only one of the 17 chemicals was found in urine, and that was one person at a level almost undetectable.