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Old 04-10-2006, 06:49 PM   #1
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Triple screen

Does anyone know what percentage of triple screen tests come out as false positives? My doctor's office called me today and said that my results for the Down Syndrome portion came back abnormal, so they're sending me to a perinatologist next week for a diagnostic ultrasound. I know that this could be a false positive, and I know that even if it isn't, it doesn't necessarily mean that my baby has Down's, but I'm really scared and just need a little reassurance. I've had such a wonderful pregnancy up till now, at least compared to some of my friends (one of them had unexplained bleeding her entire first trimester), and now this......

 
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Old 04-10-2006, 07:55 PM   #2
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Re: Triple screen

HI,
Today the same thing happen to me, i'm 28 and i have been told that i have a 1 in 80 chance of having a child with downs. After this all sank in i went to do some checking up on the internet for myself. Apparently only 5% of the people whom have a positive result have something to worry about. You will probably need to go for a level 2 scan..i have mine booked for Wednesday..the reason that your blood test came back positive could be many reasons inculding that you may have the wrong dates or more than one child growing inside you, there are many more explainations so try not to worry until you know for sure..I know it's hard but...
Your chances that everything is fine are alot greater than something being wrong.

 
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Old 04-10-2006, 08:14 PM   #3
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Re: Triple screen

I agree that you should not worry. My quad screen showed a 2 in 3 chance of baby having Trisomy 18 and I couldn't get in for an ultrasound/amnio for 4 weeks! 4 weeks of agony and hysteria only to show (with 99% accurate amnio) that baby is chromosomally normal. These tests have a very high false positive rate and there is no sense worrying until you have the Level 2 Ultrasound and it shows that there is cause for concern. Good luck. I bet you are one of the false positives!

 
Old 04-10-2006, 08:51 PM   #4
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Re: Triple screen

I did some more research this evening, after I calmed down, and found some of the same things y'all have mentioned, which has eased my mind a little bit, but of course there's still that tiny bit of worry!

Good luck with your scan, Claudia....I don't go in for mine until next Tuesday, so I'll have to keep myself extra busy this week so I don't stress myself out too badly!

 
Old 04-11-2006, 09:49 AM   #5
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alia1074 HB User
Re: Triple screen

I don't know the exact percentage but I know that false positives are very high. When I was pregnant with my daughter, we also tested positive and went to a specialist. He did a high level ultrasound and did not find any markers. We waited 2 weeks and went back in for another and still he saw nothing. At this point our chances went from 1/133 to 1/266. In the end, I gave birth to a perfect little girl.

I don't know why they even conduct these tests if the majority of the time they are wrong. They just put the moms thru unnecessary agony.

I hope everything works out for all of you!

 
Old 04-11-2006, 11:39 AM   #6
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Re: Triple screen

The false positive rate is 5-8%. The majority arent wrong, but this is why they do further testing.

 
Old 04-11-2006, 01:55 PM   #7
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uagirl7 HB User
Re: Triple screen

I am currently ttc but I have been reading all of the posts on this board about this subject. I really think that when I do finally get pregnant and the time comes to have this test that I am going to elect not to have this test done. I just don't see the point in worrying about anything if the test comes back positive because even if their was something wrong with the baby like downs syndrome, I'm going to love it regardless. I just don't want to have the stress of worrying about it and just want to enjoy being pregnant. Does anybody else agree with this? Is their a good reason why you should have this test done?

 
Old 04-11-2006, 06:23 PM   #8
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Re: Triple screen

The same thing happened to my sister. She was told that he results were abnormal and were an indication of downs. My sister ended up having an amnio which ruled out any abnormalities.

 
Old 04-11-2006, 07:36 PM   #9
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Re: Triple screen

Uagirl -- do a search for the other posts on this board (within the past 4 weeks) about this subject.

There are LOTS of good reasons to get it done, including getting proper pre-natal care for a special/high-risk pregnancy, being in an appropriate medical center when you give birth (if there IS potentially something wrong), and having the appropriate treatments readily accessible.

For me, I live in a fairly rural area, and the closest children's hospital is over 2 hours away. Most babies that leave my area are life-flighted there. I'd rather know NOW if there was an expected problem so that I could:

a. read up on the potential medical issue and how it's treated (so I know what to expect and don't have to freak out shortly after giving birth)
b. have a neonatalogist and other specialists on hand AND know their names and backgrounds instead of just hoping that the guy on call is the one didn't have any malpractice suits last year
c. plan the home life after the delivery (are there things we'll need special, things we should avoid, etc.)
d. prepare my family in case there's a problem (who wants to do all that when everyone is expecting a perfect,"normal" child -- I'd rather prep them in advance and be able to calmly and clearly explain the medical condition and how it's treated, etc.)

Maybe I'm just anal and like to be prepared...

Just because I choose to have this test (it'll be a few more weeks before I have it) doesn't mean it's right for everyone. You asked for some reasons why you should. Notice that none of my reasons included "aborting a less-than-perfect child." I don't think that's an option, but then again, I haven't been tested with that particular challenge in my life, so I can't say with 100% certainty how I'll react. All of my answers had to do with being in control of the situation and NOT just reacting in a crisis.

I know that the last time I was in the hospital for surgery (just last December) a thousand times I wished I had my laptop and a wireless connection so I could look up something the doctor or nurse said or look up something that I was feeling/wondering about. Since that's not really an option, I guess I'll have to get all those questions answered ahead of time.

 
Old 04-12-2006, 07:30 AM   #10
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Re: Triple screen

I choose to have it done, not because i would have aborted had their been something wrong, but just for peace of mind.

Like xinerevelle said, if you know ahead of time you can prepare. Researching the abnorality and having an understand ahead of time could save so much in the long run.

Maybe its not right for everyone. I know it would just stress some people out and thats obviously not healthy for the baby or the mother.

Plus all the triple screen (or actually, they do quad screens now too) does it give an indication if there is anything wrong. That way they can do further testing, and possibly rule out any abnoralities.

 
Old 04-12-2006, 08:19 AM   #11
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Re: Triple screen

Barton:

I know so many stories like yours. I knew 10 woman that had this blood test done and guess what? Four out of 10 were given abnormal results and ALL had healthy babies. I also had a friend that worried herself sick so much of her abnormal results that she miscarried a perfect healthy baby; it's such a shame. Alot of people are for it and like it, but not me. I have already read up on DS and all the information I need to know in case my child was ever born with any abnormalties. My healthcare, etc is all set in case of this situation. I say if people are that concerned, they should have an amnio and skip the tests, as sometimes they do more harm than good.

Melly

 
Old 04-12-2006, 09:43 AM   #12
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Re: Triple screen

Could some please shed some light on these tests for me? I am 30 years old and 7.4 weeks pregnant with my first. My first ampt. won't be until I am 10 weeks. Is this something I will be asked about at my first apmt - whether or not I want the tests? Or is this something they only do for people who are high risk?

Any help is appreciated.

Thanks!

 
Old 04-12-2006, 09:54 AM   #13
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Re: Triple screen

They offer it to everyone. Actually, some doctors are quite pushy about it, but they will give you accurate information about the test.

I dont know what the standard is, but I didnt take mine until 17 weeks or so. It was my 3rd appointment.

And i think they dont do the amnio first because its intrusive and more painful. Plus they have to do the us to figure out where the baby is so they dont poke it, and other stuff. It just seems like that would be a hassle to do for everyone, instead of just the people who have a positive triple/quad screen

 
Old 04-12-2006, 02:38 PM   #14
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Re: Triple screen

It usually recommended for women who will be age 35+ when they give birth, or if there is some other health history that would call for it. The protocol is to do the triple/quad screening via blood work first, then if there are abnormalities showing there they do a level 2 ultrasound that gives them more info on the exact age and size of the baby. This is important since the "normal levels" of the test indicators are all based on the age of the fetus. Then they do an amnio -- that's the third thing they do. And it doesn't just look for down's syndrome... they look for other things as well.

 
Old 04-12-2006, 03:05 PM   #15
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Re: Triple screen

Quote:
Originally Posted by xinerevelle
It usually recommended for women who will be age 35+ when they give birth, or if there is some other health history that would call for it. The protocol is to do the triple/quad screening via blood work first, then if there are abnormalities showing there they do a level 2 ultrasound that gives them more info on the exact age and size of the baby. This is important since the "normal levels" of the test indicators are all based on the age of the fetus. Then they do an amnio -- that's the third thing they do. And it doesn't just look for down's syndrome... they look for other things as well.
When my doctor's office called me, they specifically mentioned Down's, so I'm assuming that there are certain levels that would indicate certain defects? I know that I can pretty much rule out two of the other reasons this test may come back falsely positive: gestational age and twins. I'm absolutely positive of when I conceived. My LMP was December 11; hubby and I hadn't had sex for a week before that, and didn't have sex again until Christmas, and after that, it was another three weeks before we had sex again. At my 12 week ultrasound, baby was measuring at 11.5 weeks, and I just don't think the baby would be measuring off by three whole weeks one way or the other!! And we didn't see any evidence of multiples with that ultrasound, nor have we heard more than one heartbeat, so unless there's another munchkin in there hiding REALLY good, that one's out.

I'm trying not to stress out, I'm trying to think positive, but boy is it hard, especially when I have to wait until next Tuesday for the ultrasound!!

 
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