the 24-h excretion of pregnanediol was compared with ( 1 ) the concentration of progesterone in plasma , ( 2 ) the concentration of progesterone in saliva , ( 3 ) the concentration of pregnanediol in small urine samples , ( 4 ) the rate of excretion of pregnanediol and ( 5 ) the ratio of pregnanediol to creatinine in small urine samples .
C0033308
progesterone
C0033004
pregnanediol