Table 1.

Peripheral blood serum levels of estradiol and progesterone

Treatment	Estradiol, pg/ml	Progesterone, ng/ml
Virgin control	18.3  ± 8.8	12.7  ± 2.1
Pregnant*	55–630	45–130
Perphenazine	16.6  ± 7.8	101.5  ± 10.3
Estradiol plus progesterone	168.8  ± 22.1	25.8  ± 6.6

Shown are serum levels of estradiol and progesterone in virgin, pregnant, and rats treated with 5 mg/kg perphenazine or 30 mg of E plus 30 mg of P. 

^*Pregnancy levels are derived from Numan (6) and represent the range during pregnancy.