Determination of Progestin Residues in Fish by UPLC-Q-TOF/MS Coupled with QuEChERS

Table 2

Regression equations, correlation coefficients (R²), LOD, and LOQ of 10 progestins.

Compounds	Linear equations	R^2	LOD (ng/g)	LOQ (ng/g)
Norethisterone	y = 184.1x + 2165	0.995	0.23	0.77
17α-hydroxyprogesterone	y = 135.3x + 439.8	0.999	0403	1.77
D-methylnorethindrone	y = 156.6x + 1425	0.995	0.52	1.72
17α-hydroxyprogesterone acetate	y = 152.3x + 1707	0.997	0.34	1.12
Megestrol	y = 185.8x + 418.2	0.999	0.66	2.20
Medroxyprogesterone	y = 158.9x + 439.7	0.999	0.27	0.91
Chlorprogestone acetate	y = 77.1x + 698	0.997	0.32	1.05
Medroxyprogesterone acetate	y = 198.7x + 1468	0.998	0.37	1.22
Melengestrol acetate	y = 137.3x + 1113	0.998	0.52	1.73
Progesterone	y = 168.9x + 1266	0.999	0.28	0.92