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Table 1 Example of SDPA for different LLOQ's

From: Implementation of a reference standard and proficiency testing programme by the World Wide Antimalarial Resistance Network (WWARN)

QC Sample QC1 QC2 QC3 QC4
Assigned value 5 20 100 500
  SDPA (%) SDPA (value) SDPA (%) SDPA (value) SDPA (%) SDPA (value) SDPA (%) SDPA (value)
Lab 1 LLOQ 1 20% 1 15% 3 15% 15 15% 75
Lab 2 LLOQ 20 <LLOQ   25% 5 20% 20 15% 75