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Beta Quant experts I need you help (same as ttc)

Beta Quant experts I need you help (same as ttc)

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  • Valleygirl Valleygirl's Avatar 12-13-04 | 07:36 PM
  • Ok here is the story. I had some very light brownish cm this morning, I am 26 dpo (5w6d pg) I went to my doc he did a beta quant which was >18,000. He said my cervix was tightly closed and I showed no signs of active bleeding and he wanted to see what my # was an then schedule an u/s. Here is my question. On 14 dpo my beta was 139.6 on 16 dpo was 492. Well according to my calculations if my # doubled every 48 hours after the 16 dpo test my number should be >31,000, which it is not. But if I go back to the 14 dpo # and double every 48 hours my number should only be >17,800 which it is. I don't know if I should be worried or not. Am I miscarrying again. Why would my numbers more than triple and then drop down so much? Can this happen and still be a successful pg? I go in on Wednesday for an u/s, but I am so nervous now. I haven't had any more brown cm. But this is how my second miscarriage started brown cm and then the next morning bleeding.
  • emg92702 emg92702's Avatar 12-14-04 | 12:03 AM
  • I'm sorry you're having to worry!

    I found a website that allows you to calculate the doubling time if you have 2 beta numbers and know the number of days between them. Using your 16 dpo beta of 492 and your 26 dpo beta of 18,000, so 10 days between tests, it says that your doubling rate is every 46.2 hours!! So, that is excellent! (The website is

    And, your numbers for dates look fantastic too. Here's one of the charts I've found:

    Weeks from the Last Menstrual Period (LMP) Amount of hCG in mIU/ml
    3 5 - 50
    4 3 - 426
    5 19 - 7,340
    6 1,080 - 56,500
    7-8 7,650 - 229,000
    9-12 25,700 - 288,000
    13-16 13,300 - 254,000
    17-24 4,060 - 165,400
    25 - 40 3,640 - 117,000

    (Edited: ok, this chart is really hard to read on here...if you can't tell, for 5 weeks along the normal range is from 19 - 7,340 and for 6 weeks along, the normal range is from 1080 to 56,500)

    I know it is pretty impossible not to worry, but try not to. Your doubling rate is great, your numbers are great. I had spotting, both brown and pink, and occasional red throughout my whole first trimester with my pregnancy with Ava, so the spotting alone doesn't mean anything bad.

    I'll be thinking of you!

    Last edited by emg92702; 12-14-04 at 12:05 AM..
  • Valleygirl Valleygirl's Avatar 12-14-04 | 12:49 AM
  • Thanks sweetie that helped a lot!
    I mis-typed when I put in that I am 26 dpo because I am 28 dpo. I still have a doubling rate of just over 55 hours which is still within normal range. I also saw that after >6000 the doubling time increases to 96 hours. So my numbers do look to be ok.
  • glinda glinda's Avatar 12-14-04 | 12:51 AM
  • While not a baby expert, I definitely qualify as a beta expert. The beta stops doubling every 48 hours after it reaches a certain point. And even when you first start testing, you need it to double within 72 hours, not 48 hours. At your level, your beta is probably doubling every 4 days.

    Don't worry Melanie. Your beta level has increased very nicely.

    Good Luck.
  • Cracker_Jac Cracker_Jac's Avatar 12-14-04 | 06:56 AM
  • You received some great information! I just wanted to lend my support, and let you know that we are thinking about you.

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