Farmed shrimp from Thailand, Vietnam, and India can be traced back to their countries of origin with more than 98 percent confidence through a process known as elemental profiling, according to a new World Wildlife Fund (WWF) report.

Elemental profiling, said WWF, is a process of analyzing a set of the elements that make up a material or species. In this case, 23 elements found in shrimp were examined.

The system is not DNA based.

While the study confirmed accuracy in the traceability of shrimp to a parent country, it found that trying to trace the origin down to states or provinces showed promise, but was not as reliable as traceability on the country scale.

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