7 U.S. Code § 138c - Samples
Samples shall be tested by the laboratory according to methods specifically approved for such purpose by alternate methods of demonstrated adequacy or equivalence, as determined in regulations established under this chapter.
The laboratory shall submit the results of the tests conducted under subsection (a) to the Secretary on forms provided by the Secretary, on or before the date determined by the Secretary.
The Secretary shall ensure that performance evaluation samples for analysis are provided to laboratories accredited under this chapter not less than two times a year.
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