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Table 5 Data of accuracy with placebo for recovery analysis for ESP

From: Analytical quality by design approach to RP-HPLC method development and validation for simultaneous estimation of esomeprazole and naproxen in modified-release dosage form

The concentration of sample with placebo μg/ml

Peak area of ESP

Recovered concentration μg/ml

% Recovery

Individual

Average

Sample

Standard

Individual

Average

8.10

8.11

72,099

90,584

(10.20 μg/ml)

8.12

8.13

100.23

8.18

72,448

8.16

99.73

8.05

72,026

8.11

100.75

10.05

10.08

89,630

10.09

10.10

100.42

10.11

89,695

10.10

99.90

10.08

89,654

10.10

100.15

12.20

12.19

109,138

12.29

12.26

100.73

12.14

108,515

12.22

100.65

12.22

108,914

12.26

100.36