That might seem high, but remember that it was drawn at noon on 18 DPO. While betas in the 100-400 range are more common, they are being drawn earlier, because those women were wise and brave enough to take an HPT at 14 or 15 DPO.
After looking at betabase, it appears as though it’s a little high for one baby, but it would be low for two. I’m pretty sure there is just one in there. Having the blood draw at noon means that really it was 18.5 dpo, right? So being a little high for one would be expected.
I have my second beta today around noon. I’m optimistic that the hcg will be 1600+.
Mostly I’m glad that the possibility of triplets seems to be ruled out…though beta hcg is never 100% reliable.