Trisomy18 negative and trisomy21 Positive


Q: Dear Doctor,
My Self Prem,My wife is pregnant and 27 weeks now,We did first trimester scan and blood screen during Week 12 scan and screen test(trisomy18 negative) shows that the baby is normal and in second trimester we did anomaly scan and triple blood screen test.In scan it was normal and in screening it was Trisomy 21 positive.Our Dr referred Genetic counseling there that took one more scan and concluded that the 2nd trimester screen test would have been false positive as growth of the baby is normal and no soft markers found.My question is which screen report is more reliable 1st or 2nd.Kindly suggest.

Symptoms:  Pregnant

A:   This question is currently in queue and will be answered shortly by one of our doctors. In the meantime you may browse our library of answered questions by clicking here.

Related Q&A

Q: Is it possible for me to be pregnant? Are these signs? Is it too early to tell? I had unprotected sex on 12/16/16, an...

Q: I had my period from 12- 18 and realised drops of blood from 18-25.had sex on 5-10 but he produced outside .i feel bl...

Q: Hello, I took the morning after pill (19th November) whilst I was at the end of my first period and within two weeks ...

Q: Hi I had unprotected sex on my ovulation day or at least around that time. But I still had my period thirteen days a...

Q: On the poor advice from someone at Planned Parenthood (who I think was a volunteer and not a professional), about a w...


Dr. James Obaji M.D.

  • 247 Reviews
  • Family Physician

Dr. Suneel Sharman M.D.

  • 190 Reviews
  • Family Physician

Dr. Pat Golden M.D.

  • 169 Reviews
  • Cardiologist

Dr. Kunaal Jindal M.D.

  • 112 Reviews
  • Plastic Surgeon