Despite the results of the enamel isotope test, most experts who’ve weighed in disagree with the conclusion that Dang Tan Ngoc might be an American. They pointed out that one tooth was not enough for the people at IsoForensics, Inc. to be able to arrive at such a definite conclusion.
Experts pointed out that the man’s isotope results match other parts of the world as well. To get a more accurate result, it is important to test at least two teeth that formed at different times. If both teeth have similar isotope levels, then it can be concluded with more certainty that the man grew up in a particular area.