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PREGNANCY: question about HCG rise

From: mcgregor (anonymous@obgyn.net)
Fri, 31 Oct 2008 11:19:45 -0500 (CDT)


I am 4w5days pregnant. Beta on 10 dpo was 13 (prog was 30), then on 16 dpo beta was 275, so a good rise. Then on 18 dpo beta was 630.

My midwife does a calculation with betas taken over 48 hours as follows: second number - first number/second number. She likes to see a result of at least .60 to consider it a good rise.

Doing this calcution, my result is .56.

This is my fourth pregnancy (i have one child) and i have done a TON of reading over the last 3 years about hcg levels and how they rise, on message boards, medical sites, OB and RE websites, etc. Everywhere else, I read that doubling in 48 hours is great, and some places even say doubling in 48-72 hours is good. My doubling time was 41 hours, and my numbers are right in line with what I see on betabase.com, which has thousands of women's betas for successful pregnancies.

I have never heard of anyone else mentioning the calculation my midwife does with betas. Is my midwife's interpretation of what is a "good" rise to stringent? If I had just seen my numbers, without talking to the nurse, I would have thought they were great. But after talking to the nurse, she made me feel very doubtful that this is viable pregnancy because my calculation was not .60. I know that it is so early and could still go either way, but I would like to be able to feel positive about my numbers going up at this point.

Thanks for any feedback!




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