|  | Indoor air (ng/m3) | House dust (μg/g) | Serum (ng/g lipid) |
---|---|---|---|---|
EPA health-based guidelinea | 3.4 | 0.22 | Â | |
Maximum for 16 MA homesb (PCB 52+105+153 only) | 7.3 | 0.6 | Â | |
Maximum for 16 MA homesb (sum of 65 PCB congeners) | 51 | 3.6 | Â | |
Maximum for 1046 U.S. homesc (sum of PCB 105+153) | Â | 10 | Â | |
NHANES PCBsd | median | Â | Â | 267 |
 | 75th percentile |  |  | 394 |
 | 95th percentile |  |  | 715 |
 | maximum |  |  | 1466 |
NHANES 4,4'-DDEe | median | Â | Â | 692 |
 | 75th percentile |  |  | 1314 |
 | 95th percentile |  |  | 2569 |
 | maximum |  |  | 6510 |