Journal of Analytical Science and Technology

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)
Injection ID	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

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