3 year wait: Beta HCG measurements: Part II

Tuesday, November 3, 2015

Beta HCG measurements: Part II

Interestingly, I can see how often my posts are read. And one post in particular is vastly (like 10x) more popular than anything I’ve ever written: my October 21, 2014 post on beta HCG measurements.

http://3yearwait.blogspot.com/2014/10/making-misuse-of-beta-hcg-measurements_21.html

I suspect it’s popular because A LOT of women do online research to get a sense of how good/bad their early beta numbers are. I feel both good and bad that so many people have read that post—good because I’m always happy to share what I’ve learned, and bad because that was a MEATY post. So I’ve decided to condense what I’ve read into a little chart for people to use, keeping in mind that if people really want the details on the information behind all of this they should read the source material (below). The only dates that really have “chances of ongoing pregnancy” are 16dpo. The rest is just fluff, but it’s better than nothing:

Days after	HCG measurements (IU/L)	Chances of ongoing pregnancy
12dpo	47	Median self-reported for continuing to heartbeat
13dpo	85	Median self-reported for continuing to heartbeat
13dpo	64	Study average
14dpo	128	Median self-reported for continuing to heartbeat
15dpo	138	Study average
15dpo	191	Median self-reported for continuing to heartbeat
16dpo	282	Median self-reported for continuing to heartbeat
16dpo	193	Study average
16dpo	25–50	<35%
16dpo	50–100	35–64%
16dpo	100–200	64–80%
16dpo	200–500	80–95%
16dpo	500–1,000	>95%
16dpo	>1,000	100%
17dpo	406	Median self-reported for continuing to heartbeat
17dpo	100	Likely poor outcome
17dpo	277.80	Ave did not continue
17dpo	377.8	Predictive of positive outcome
17dpo	596.80	Ave resulted in live birth
18dpo	585	Median self-reported for continuing to heartbeat

For reference, here are some of my HCG measurements:

14dpo	146	Me with my only successful pregnancy
15dpo	112	My measurement before blighted ovum
16dpo	131	Me before my early miscarriage
16dpo	480	Me with my only successful pregnancy
21dpo	4167	Anencephaly pregnancy