Get Virtual Care
For Businesses
About Us
A member asked:
I am 39 years old, i am 17 weeks pregnant now. at 14 weeks i took maternit21 and it was positive for trisomy21. what are my chances of faulse positive?
2 doctors weighed in across 2 answers
Very unlikely: Very unlikely - but you do need further testing if you have more questions - please ask.
Answered 9/29/2016
4.4k views
Cell-free fetal DNA : (cffDNA) circulates freely in the maternal bloodstream from 7 weeks gestation till ~ 2 hours after delivery. Multiple methods are used to test it for a variety of genetic disorders, including aneuploidies, disorders with abnormal #'s of chromosomes. Though both sensitivity & specificity of MaterniT21 testing are quite high, you should have been offered definitive invasive genetic testing.
Answered 1/5/2016
1.8k views
Related Questions
A member asked:
Ended a pregnancy at 13weeks due to trisomy 21. Is this likely to happen again? I'm 34.
6 doctors weighed in across 3 answers
A member asked:
I am 39 & 14 weeks pregnant. My 13 week scan shows NT of 2.2mm and Papp-a of 0.7 and HCG of 4.4. My adjusted risk of trisomy 21 is 1:13. Is this bad?
A doctor has provided 1 answer
A member asked:
29 years old, bilateral cpcs and mild renal dilation in my 19 wk ultrasound. What is my adjusted risk for trisomy 21,13 and 18?
A doctor has provided 1 answer
People also searched for:
My pregnant qife 34 years old, blood test came out trisomy21 1:14. Doctor ordered chorionic sample. what is the chance of my baby?
Is the recurrent chance of having a pregnancy with trisomy 18 the same as trisomy 21?
I'm 34. I just terminated a pregnancy due to trisomy 21 and imminent heart failure. Can i still have a healthy baby or does this mean my chances r low?
I just recently found out i'm pregnant with my 3rd child. Two of my children are from a previous marriage and I am now pregnant with my fiance's child and he is 38 I will be 29 in a week. My 2nd child has trisomy 21 downs syndrome. Everyone I talk to keep
Pregnant with 1:32 high risk for trisomy21. Age 29 with healthy 4yr son.NT 3.3mm, bhcg 3.585MoM, papp 1.271MoM. Morphology normal. Is DS very likely?
Didn't find what you're looking for?
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your questionMore of what we treat
Download HealthTap
Video visit and message your doctor
