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PDFWAC 16-309-270

Proficiency testing.

The laboratory must participate in an approved proficiency testing (PT) program that reflects the best available science as determined by the accrediting authority.
[Statutory Authority: RCW 15.150.030 and 2022 c 135. WSR 24-09-079, ยง 16-309-270, filed 4/17/24, effective 5/18/24.]
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