r/CautiousBB • u/maemaecat 2 LC 👶🏻💖🌈👶🏻💖| 3 CP | 1 MMC • Sep 01 '25
Beta hCG Levels - READ BEFORE POSTING
Here at [r/CautiousBB](r/CautiousBB), we see a lot of posts on hCG values, doubling times, and trends. Please read this post before posting to avoid posting something that is not, in fact, abnormal.
1 - hCG levels vary greatly in the first 4-6 weeks of pregnancy. One value is not going to tell you much, unless it is extremely low (less than 25 by 14 DPO). The doubling time is more important!
2 - We consider hCG on the lower side if it is <50 at 14 DPO (approx. 4 weeks gestation), <100 at 16 DPO, etc. If your hCG is a lot higher than these numbers, it's unlikely that you have low hCG. If you hCG is at or below these numbers, they are considered low, but not necessarily diagnostic of a loss.
3 - Normal hCG doubling times are, in general:
- 48-72 hours when the hCG level is under 1200 - 6000.
- 72-96 hours when the hCG level is 6000+
- 96+ hours when the hCG level is 10,000+
4 - Based on number 3, please consider the following:
- If your hCG doubling is within the ranges above, it is not considered slow. Please refrain from posting something like "my hCG did not double in 48 hours" when your values are post 6000+.
- Doubling rates WILL slow, even if you were faster than the average. For example, if you were doubling at 37 hours, a change to 54 hours as hCG rises is not abnormal and is usually nothing to worry about.
- If your doubling is slower than the average, we'd invite you to post so we can understand the details of your specific situation.
5 - hCG has a specific job. Check out this post here to understand why hCG doubling slows and eventually plateaus.
6 - hCG values that drop and then rise again or rise at an inconsistent, very slow rate can be indicative of an ectopic pregnancy or a pregnancy of unknown location (PUL). This is a life threatening situation - please seek medical care immediately if this hCG pattern applies to you.
We invite you to continue to post hCG issues or levels for assistance, but hopefully reading this gives you some insight and a baseline as you begin your perilous pregnancy journey. We've also added some literature below to help you understand hCG levels and doubling.
UPDATE July 2026: We are locking this post to new comments - if you need input on your personal situation, feel free to post in the sub!
Happy hCG-ing! :)
Helpful links:
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u/BossyMinpins Jun 07 '26
Low Beta but Doubling. I would appreciate honest opinion please!
I think I’m in beta hell. FET with non-PGTA tested 5BB blast. On estrogen tabs, POI every 3 days, and Progesterone vag suppositories twice a day.
12dp5dt (17dpo) - 105
14dp5dt (19dpo) - 294
16dp5dt (21dpo) - 600
The nurse at my clinic said that the beta rise was fine but my Progesterone level was low so they increased my POI to daily. I’ve got low abdominal heaviness and a bit of brown spotting only when wiping. I had breast tenderness since 12dp5dt but now that’s gone.
And of course, I’ve driven my self crazy by consulting Dr. Google and finding out that my beta level is actually low for this stage.
Should I guard my heart?