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Senior producer Matt Grubs looks at testing for the novel coronavirus — both for those infected and for those who may have had the virus with only mild or no symptoms. Grubs talks with Dr. David Grenache, who is the chief scientific officer of TriCore Reference Laboratories, the largest independent laboratory in the state.

This story is part of a collaboration with New Mexico PBS through FRONTLINE’s Local Journalism Initiative, which is funded by the John S. and James L. Knight Foundation and the Corporation for Public Broadcasting.