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Table 2 Accuracy and precision of quality control samples

From: Absolute quantification of endogenous angiotensin II levels in human plasma using ESI-LC-MS/MS

  Intra-day (n = 3) Inter-day (n = 9)
  QC Concentration (nM) Accuracy (%)1 Precision (%)2 Accuracy (%)1 Precision (%)2
Angiotensin II LLOQ 6 106.4 16.0 112.5 14.5
LQC 30 96.6 6.6 91.5 8.1
MQC 120 105.3 7.6 103.1 4.6
  HQC 240 92.7 7.8 94.6 9.0
  1. 1calculated as (mean determined amount/nominal amount × 100).
  2. 2calculated as % CV. (SD/mean) × 100.