P4大於1.5之機率約24%，懷孕率明顯較低

施打破卵針當天P4>1.5之機率約24%，

E2越高，COH劑量越高, 卵數量越多，P4>1.5之機率越高

P4>1.5懷孕率較低
P4>1.9懷孕率明顯較低

http://humrep.oxfordjournals.org/content/27/6/1822.full
http://humupd.oxfordjournals.org/content/19/5/433.full

Table IV

Pregnancy outcome [% (n)] when progesterone was elevated >1.5 ng/ml.

	Progesterone >1.5 ng/ml	Normal progesterone	P	Odds ratio (95% CI)
Agonists only (n= 87)a	(n = 21)	(n = 66)
Positive-HCG rate	28.6 (6)	48.5 (32)	0.11	0.42 [0.14–1.23]
Clinical pregnancy rate	09.5 (2)	33.3 (22)	0.03	0.21 [0.45–0.98]
Delivery rate	09.5 (2)	31.8 (21)	0.04	0.29 [0.48–1.00]
Antagonists only (n= 91)b	(n = 21)	(n = 70)
Positive-HCG rate	23.8 (5)	52.9 (37)	0.01	0.27 [0.09–0.84]
Clinical pregnancy rate	14.3 (3)	41.4 (29)	0.02	0.23 [0.06–0.87]
Delivery rate	14.3 (3)	34.3 (24)	0.07	0.31 [0.08–1.19]
Total study population (n= 178)
Delivery rate	11.9 (5/42)	33.1 (45/136)	0.01	0.27 [0.10–0.74]

• ^aSeven patients with agonist protocol were not analysed because of the following reasons: (two not started stimulation, three stopped and two did not give blood for progesterone levels on the day of HCG one of them had a pregnancy loss).
• ^bFive patients with antagonist protocol were not analysed because of the following reasons: (three not started stimulation, one stopped and one did not give blood for progesterone levels on the day of HCG).