My partner got an 18 on day 11 after 3day transfer. We are only told that she needs to be rechecked. I'm wondering, do the majority of these low betas fail or succeed? Is it 50/50? Just curious

Me: 8/23/07: 11 days after 3d transfer: 61
8/25/07: 13 days after 3d transfer: 91
My partner: 8/23/07: 11 days after 3d transfer: 18
8/25/07: 13 days after 3d transfer: 90

If you want a bunch of numbers, you can check Betabase.info