December 2011 Moms

fetal fibronectin test?

I get emails from TB now and then....and I got one about risk factors for preterm birth.  It mentioned something called a fetal fibronectin test...it's a test for a protein that acts like "glue" that attaches the amniotic sac to the lining of your uterus.

Apparently if you test positive for this test, you have a greater risk of having a preemie.

Thought I'd share....I've never heard of this before.

I am seeing my Dr. on Monday for an u/s and am going to ask her about this.

Here's a link with some info -

 https://www.mayoclinic.com/health/fetal-fibronectin/MY00128

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Re: fetal fibronectin test?

  • My understanding of this test is that they often do it for women in pre-term labor or having complications further along-- it can give a better indication of the likelihood that they will be having the baby sooner than later. I've never heard of anyone having an FFN test done if everything is going smoothly.
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  • Thank you for responding. After reading up on it, I was like - Oh great....another test I have to worry about.

    I am already at risk for pre-term labor because of a blood clotting disorder I have. The two aren't connected, which is good.

    It was just strange....I've heard of so many tests during pregnancy..but never this one.

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  • This test is only given if your Dr thinks you will have the baby early or are in preterm labor. It can not test to see if you will have the baby preterm what it can test for is if will have baby in the next 2 weeks and they tend to get more false positives then truths. I had this done with my son at 26 weeks when I was in the hospital for preterm labor they take a something like a qtip and swab up in there and send it to be checked mine came back positive that I would have him in next 2 weeks. He was born 9 weeks later. The test is not given unless needed and cause more stress then worth. 
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  • I had it done at 26 weeks due to cramping. It was negative. Most pregnant women I know have never had it done.
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  • I had this test done twice with my last pregnancy. Both times stemmed from preterm contractions. I had high blood pressure and had to do NSTs twice a week. Both times I didnt feel my contrations but had severe back pain, later I learned I was having back labor.

    The FFN tests are like a vaginal ultrasound, no pregnant woman I ever talked to had had one before. Both were negative, apparently if they come back positive normally you go into labor within the next 48 hours. At least that is what they explained to me.

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