Number crunching

True to form, I'm sort-of kind-of obsessively researching today, in anticipation of our beta tomorrow.  The beta will give us a quantitative number for the amount of hCG in my blood, measured in mIU/ml.

My blood draw will be at 8.75 days past a 5 day transfer (7am, transfer was at 1pm), so we're a little short of a true 14 dpo (days past ovulation) result.  Adjusting the numbers on betabase somewhat for that, the average beta levels at this stage of pregnancy would be 92 for a singleton and 187 for twins.  I believe Houston IVF will be looking for anything over 100.

But I was a very high hCG producer during my first surrogacy.  At 15 dpo, my level was 1,416 with twins-- about 5.3 times the average and to this day, higher than I've ever seen someone else get.  There's no telling how much of that was me and how much of it was the embryos, I guess.  But if I were to have equally absurdly high numbers this time, the result would be 489 for a single and 988 for twins.

So, here are ranges for my predictions:

<92 = I'd be worried (not going to happen)
92 - 187 = singleton
187 - 489 = could go either way
489 - 988 = twins
>988 = I'd be worried.  :)

On SMO, there's a Master Beta Break Down List of people's beta levels on various days with various types of transfer.  I tend to prefer betabase, only because it has a larger sample size, but here's what SMO says:

9dp5dtSINGLETON: 8.4, 21, 39, 40, 48, 50, 51, 52, 55, 57, 60, 60, 68.9, 73, 77, 90, 90, 92, 93, 94, 96, 99, 99, 115, 118, 120.5, 122, 124, 128, 133, 137, 141, 146, 150, 151, 153, 156, 160, 199, 203, 210, 262, 285, 308, 345, 348, 360, 477
TWINS: 79, 119, 120, 127, 141, 147, 149, 160, 173, 180, 187.51, 194, 197, 199, 200, 224, 234, 242, 243, 245, 248, 254, 255.3, 260, 274, 275, 290, 300.8, 306, 309, 320, 323, 329, 334, 340, 347, 350, 354, 363, 374, 379, 419, 432, 448, 496.3, 753
TRIPS: 89.5, 110, 123, 254, 289, 345, 374, 514

So there's just a little more context for whatever we see tomorrow.

My official, out of thin air prediction is 255.  Tomorrow we find out if I should go to Vegas.