C-123 veterans are accustomed to resistance from VA in permitting our disability claims based on exposure to Agent Orange (or military herbicides, as the terms are frequently interchanged.)
To better form a basis for preventing C-123 claims, VA staff presented a poster about Agent Orange at the 2012 Society of Toxicology conference in San Francisco, and sneaked in a little line:
"exposure = contamination field + bioavailability."
This meant that VA would recognize veterans' claims for exposure only if there was also proof of some medical implication. No bioavailability equals no exposure, via the newspeak VA definition.
This redefinition is quite unique. It was implemented in the VA without peer review nor regulatory notice, by the staff of Post Deployment Health. The new definition is so unique it isn't found anywhere else in science or medicine, not even elsewhere in VA. Just...for denying C-123 veterans' claims.
Definitions of Exposure Used By Different Authorities: