the diurnal variation of plasma oestrone ( e1 ) , oestradiol ( e2 ) , oestriol ( e3 ) , progesterone ( p ) , cortisol ( f ) and dehydroepiandrosterone sulphate ( dhas ) and saliva e1 , e2 , e3 , p and f was investigated in matched plasma , and saliva samples were obtained hourly from 08.00 to 24.00 h and at 04.00 , 07.00 and 08.00 h from nine pregnant women ( 3 at 30 , 3 at 34 and 3 at 38 weeks gestation ) .
C0033308
progesterone
C0032961
gestation