The segment earned a stiff rebuke from representatives of government, industry, and academia for causing unnecessary alarm, even before it aired.
The criticism centered primarily on Oz's testing methods, which provided a level of total arsenic in the juices. The results do not provide a breakdown of the levels of the two forms of arsenic -- organic and inorganic.
In heated confrontation aired on ABC's Good Morning America, Besser not only blasted reporting of only the total arsenic numbers but also charged that relying on a single lab to test for arsenic fell far short of scientific standards. Oz, however, refused to back down and maintained that he acted responsibly....
The organic form of arsenic is "essentially harmless," according to the FDA [do you think they're making that up or saying it without any backing? Just because they're not explaining in detail the science behind that statement doesn't make it false]
The FDA said it has been testing for arsenic in apple juice for several years. The juice is first screened with a test for total arsenic because it is rapid, accurate, and cost-effective, according to Zink. Only when the total level of arsenic is greater than 23 ppb does the agency employ the more complex inorganic arsenic test.
"The vast majority of samples we have tested for total arsenic have less than 23 ppb," Zink noted.
In a second letter to the show, Zink informed the producers that the FDA had performed its own testing on samples of apple juice from the same lot that yielded the highest level of arsenic in Dr. Oz's investigation. All of the results ranged from 2 ppb to 6 ppb.
"In short," Zink wrote, "the results of the tests cited above do not indicate that apple juice contains unsafe amounts of arsenic."...
In an email to ABC News and MedPage Today, Aaron Barchowsky, PhD, a professor in the department of environmental and occupational health at the University of Pittsburgh, [so this is actually his bailiwick] said that he agrees with the FDA's conclusion.
"It is the inorganic form of arsenic in the environment that is toxic, and measuring total arsenic is not informative," he wrote. "I support the comments by the FDA and agree that the Oz show analysis is incomplete and probably misleading."