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16-309-130  <<  16-309-140 >>   16-309-150

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PDFWAC 16-309-140

Method performance criteria.

(1) Accredited labs may reference samples for testing by subcontracting fields of testing to another accredited laboratory.
(2) Laboratories must maintain the integrity of the sample by testing samples on an "as is" or "as received" basis before sample prep unless otherwise specified in rules.
(3) Laboratories may use historical calibrations for high complexity testing as long as it is supported by analytical data through quality control results. Historical calibrations cannot extend past 30 days.
(4) The samples fail quality control testing if the results exceed the limits indicated in chapter 314-55 WAC.
(5) Sample results are positive for the analyte being tested if their results are greater than or equal to the decision point or cutoff limits as indicated in chapter 314-55 WAC.
(6) Sample results are to be reported out in the number of digits and units of measure described in chapter 314-55 WAC.
(7) Laboratories may be accredited to conduct the following fields of testing:
Field of Testing
Level of Complexity
water activity
low
cannabinoid concentration analysis
high
foreign matter inspection
low
microbiological testing
 
 
culture method
moderate
 
immunoassay method
moderate
 
polymerase chain reaction (PCR) method
high
residual solvent testing
high
mycotoxin testing
 
 
enzyme-linked immunosorbent assay (ELISA) method
moderate
 
liquid chromatography with tandem mass spectrometry (LC-MS/MS) method
high
pesticide testing
high
heavy metals testing
high
[Statutory Authority: RCW 15.150.030 and 2022 c 135. WSR 24-09-079, § 16-309-140, filed 4/17/24, effective 5/18/24.]
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