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Table 2 Intra-day and inter-day precision of SHH and MAP PGIs at1.0-ppm concentration

From: A selective and sensitive LC-MS/MS method for the simultaneous determination of twopotential genotoxic impurities in celecoxib

Injection ID SHH (peak area) MAP (peak area)
Intra-day Inter-day Intra-day Inter-day
1 101,680 101,680 113,540 113,540
2 104,534 102,641 113,471 108,618
3 103,820 101,950 109,346 116,864
4 99,495 102,700 108,510 112,951
5 102,350 102,681 114,570 113,470
6 103,554 103,987 109,500 108,650
Standard deviation 1,826.69 801.93 252.78 3,194.58
%RSD 1.78 0.78 2.37 2.84