Table 1. Hormone levels.

Average hormone levels during the women period, in pregnancy and after menopause.

	β-Estradiol (pg/mL)	Relaxin-1 (pg/mL)
Post-menopausal period	10	0
Follicular phase	90	20
Periovulatory phase	400	20
Luteal phase	150	150
Pregnancy (2nd trimester)	5000 (range 4000–7000)	4000