Table 1.

7 homologous samples whose beta-hCG was positive at day5 culture media while negative at day 3 media from the same embryo

Samples No.	D3 embryo grade	D5 embryo grade	D5 β-hCG (mIU/ml)
1	2.3/8	compact	0.516
2	2.3/6	4 cc	1.270
3	2.2/8	morula	0.855
4	2.3/8	3 cc	1.506
5	2.2/6	3cb	2.001
6	2.3/6	I	1.101
7	2.2/7	morula	1.422