Appendix 3.5: Possible laboratory-generated quality control sample values

RESULTTYPE – Type and Descriptions
• laboratory replicate
• laboratory duplicate
• laboratory fortified sample matrix spike (LFM)
• laboratory fortified blank (LFB)
• matrix spike (MS)
• matrix spike duplicate (MSD)
• laboratory control sample (LCS)
• laboratory control sample duplicate (LCSD)
• preparation blank
• extraction blank
• method blank (MB)
• laboratory reagent blank (LRB)
• instrument blank (IB)
• calibration blank (CB)
• initial calibration verification (ICV)
• continuing calibration verification (CCV)
• blank spike (BS or LCS)
• blank spike duplicate (BSD or LCSD)
• reporting limit laboratory control sample (RLLCS)
• quality control sample (QCS, a blind sample generated by a third party outside the laboratory)