Table 1. The linear equation, linear range, LODs and LOQs.

Compound	Linear equation	R2	Linear range (μg L-1)	LOD ng kg-1	LOQ ng kg-1
Cortisone	Y = -1411.73+467.79×X	0.9974	10~500	30	100
Aldosterone	Y = -68.43+5.43×X	0.9972	10–500	30	100
Testosterone Propionate	Y = -4301.17+352.61×X	0.9971	10–300	30	100
Estriol	Y = -2.64+0.77×X	0.9927	1–250	2	10
Megestrol acetate	Y = -10868.6+3651.34×X	0.9922	1–500	2	10
Cortisone acetate	Y = -897.301+295.598×X	0.9929	1–500	2	10
Dexamethasone	Y = 2188.64+77.82×X	0.9942	5–500	10	50
Testosterone	Y = -9915.72+975.45×X	0.9953	1–500	2	10
Hydroxyprogesterone	Y = 270.23+76.56×X	0.9911	10–500	30	100
Diethylstilbestrol	Y = -60.25+4.18×X	0.9909	10–500	2	10
Nandrolone	Y = -11696.1+1094.08×X	0.9903	1–500	2	10
Prednisolone	Y = -663.42+280.98×X	0.9977	1–500	2	10
Cortisol	Y = -1117.15+370.51×X	0.9941	1–500	30	100
Norethisterone	Y = -3118.5+718.62×X	0.9929	1–500	30	100
Androsterone	Y = 8.88+33.03×X	0.9925	10–500	30	100
Progesterone	Y = -10985.1+1055.84×X	0.9931	10–500	30	100
Estradiol	Y = -3.05+0.51×X	0.9944	10–500	30	100