How were the values used in Appendix DoD-D LCS Limits developed?
EDQW Response: The LCS data were based on data submitted by commercial laboratories in 2001. The mean recovery and control limits presented in Appendix DoD-D of the DoD QSM Version 3 were based on the LCS recovery data of clean matrices (i.e., reagent water and clean solids such as soil, sand, glass beads, etc.) For more details on the LCS study, please reference the DoD LCS study report, “Development of Department of Defense Laboratory Control Sample Control Limits,” dated May 2004. The report can be downloaded from the website: http://www.navylabs.navy.mil/ManualsDocs.htm.
