Trisomy 21

Trisomy 21, also known as Down's syndrome (or DS) is a genetic disorder caused due to an extra copy of genetic material in chromosome number 21. It causes a characteristic facial appearance, developmental delay and learning disabilities.

Recently Answered Questions Recently Answered Questions

All the answers published in this website are written by Verified medical doctors, therapists and health experts. The Content has been moderated by iCliniq medical review team before publication. Post your medical clarifications on iCliniq by choosing the right specialty and get them answered. Your medical queries will be answered 24/7 by top doctors from iCliniq.

What are the pregnancy risks when the mother is 40 years old?

Query: Hello doctor, I am a 40 year old¬†female. I did nuchal translucency (NT) scan at 12 weeks and 1 day. The result reads NT 1.1 mm. Free beta hCG 25.9 ng/ml. PAPP-A 0.53. My sugar levels and BP are normal. I am taking Aspirin and Enoxaparin every day. Kindly tell me about my risks.  Read Full »


Dr. R Balakrishnan Menon

Infertility Specialist, Obstetrician And Gynaecologist

Answer: Hello, Welcome to icliniq.com. How are you doing? I see nothing for you to worry about. Let me explain. Here age is the only factor, but this is only a relative term. In the general population, the risk of genetic problems is high after 40 years, and we tend to screen all the pregnant ladies around ...  Read Full »

Can you please help interpret my triple marker test report?

Query: Hi doctor,Please see my attached report and suggest the further step to be taken.  Read Full »


Dr. Atishay Bukharia

Cosmetologist, Dermatologist, Family Physician, General Practitioner, HIV AIDS Specialist, Venereologist

Answer: Hi, Welcome to icliniq.com. Please send a clear photograph, which can be readable. This report (attachment removed to protect patient identity) is regarding the risk of Down syndrome in a fetus. As we are unable to read the exact value, I am unable to comment further. Revert back with clear photos t...  Read Full »

Will high risk trisomy 21 increase with pregnancy after 30 years of age?

Query: Hello doctor, What does high risk 1:50 trisomy 21 mean, at an age of 32 and 18 weeks pregnancy?  Read Full »


Dr. Sravanthi Nuthalapati

Obstetrician And Gynaecologist

Answer: Hello, Welcome to icliniq.com. I totally understand your anxiety. But please do not panic. The risk for Trisomy 21 (or in other words Down's syndrome) mentioned is 1:50, which is above the general population risk of 1:250. In other words, if we take a general population, and consider any women i...  Read Full »

Can mental retardation in fetus detected in 30 weeks ultrasound?

Query: Hello doctor, If nasal bone is absent due to trisomy 21, will that fetus suffer from mental retardation? Can mental retardation or other such problems detected by ultrasound at 30 weeks?  Read Full »


Dr. Keeranmayee Mishra

Obstetrician And Gynaecologist

Answer: Hi, Welcome to icliniq.com. Absent nasal bone is a soft tissue in ultrasound to diagnose Trisomy 21. Absent fetal nasal bone is one of the strongest soft markers in the second-trimester ultrasound screening. Detailed prenatal diagnosis is advisable to rule out abnormal karyotype when absent nasal ...  Read Full »

What does amniocentesis mean?

Query: Hi doctor, My wife is 27 years old and 13 weeks pregnant now. As per suggestion from doctor, we went for a double marker test. It is found that trisomy 21 + NT risk is 1:86 and doctor suggested for amniocentesis procedure. Now I am confused and do not know what to do. My wife scared that the proce...  Read Full »


Dr. Gowrimeena

Obstetrician And Gynaecologist

Answer: Hi, Welcome to icliniq.com. From the information you have given, the risk of having a baby with chromosomal problem that is trisomy 21 or Down's syndrome is 1:86. I believe you would have received detailed counseling about this condition prior to and after going through the screening test. ...  Read Full »

What does PAPP-A screen test of 1.9 and hCG level of 65.6 indicate?

Query: Hi doctor, My wife has done a PAPP-A screen test and results are 1.9 and hCG level 65.6. She is 12 weeks pregnant. Please advise regarding the same. Thank you.  Read Full »


Dr. Sameer Kumar

Family Physician, Obstetrician And Gynaecologist, Infertility Specialist

Answer: Hello, Welcome to icliniq.com. You need to attach the complete report issued by the laboratory. Important thing is the graph and the MoM (multiple of the median) values which have been calculated as per the gestational age. The risk is calculated accordingly. In case of Down's syndrome...  Read Full »

When is double marker test indicated?

Query: Hello doctor,My wife is 28 years old and is in her 13th week of pregnancy. We had an NT test a couple of days back. The NT was 1.7mm. Trisomy 21 had an adjusted scale of 1:3428. Our doctor has advised us to go for a double marker test. The results will be out in two to three days. Is a risk of 1 in ...  Read Full »


Dr. Shalaka Joshi

Obstetrician And Gynaecologist

Answer: Hello, Welcome to icliniq.com. The NT (nuchal translucency) test and double marker are dependent on each other. A risk of 1 in 3428 is not considered high. You have been asked to go for a blood test so as to conclude the results, as only NT test is not sufficient. For the double marker, NT measureme...  Read Full »

What does my double marker blood test indicate?

Query: Hi doctor, I am 12 weeks 5 days pregnant. I got my NT scan and double marker blood test results. NT value 1.1 mm, free b-hCG 1.52 MOM, PAPP-A 0.37 MOM, trisomy 21+NT risk 1:1132, trisomy 21 1:169, trisomy 13/18+NT. In urine culture, there is no significant growth observed after 48 hours. I am curre...  Read Full »


Dr. Jimesh H Mavani

General Practitioner, Obstetrician And Gynaecologist

Answer: Hello, Welcome to icliniq.com. I have seen the report completely (attachment removed to protect patient identity). Your report is normal and there is no need to worry. If you want a detailed explanation about the report, then here you go. There are some genetic syndromes, which are happening worl...  Read Full »

Can you please help me interpret my NT scan report?

Query: Hello doctor, I am a 44-year-old female. After my three miscarriages, I am 13 weeks pregnant now with IVF treatment. I have got my NT scan with double marker blood test. The results are as follows: Biochemical Trisomy 22 risk: 1:249, combined Trisomy 21 risk. Using NT & Other parameters: 1:946...  Read Full »


Dr. Sameer Kumar

Family Physician, Obstetrician And Gynaecologist, Infertility Specialist

Answer: Hello, Welcome to icliniq.com. The NT (nuchal translucency) scan levels of nuchal translucency are normal with NT < 2.5 mm. However biochemical trisomy 21 risk is high but the combined NT+ biochemical risk is low at 1:946. You may upload the picture of the cutoff graph for a convincing opinio...  Read Full »

Trisomy 21 is positive in nuchal translucency. What does it indicate?

Query: Hello doctor, My wife is 36-year-old with a height of 5.6 and weight 69.1 kg. She had NT or NB scan and double marker test in obstetrical ultrasound. The nuchal thickness is 1.0 mm. Presence of nasal bone. DV flow is normal, but in double marker test, free beta hCG is 46.20 and PAPP-A is 2.58. Triso...  Read Full »


Dr. Nadia Khan

Obstetrician And Gynaecologist

Answer: Hello, Welcome to icliniq.com. 1 in 250 means that if we take 250 women of the same results as your wife had then only one will have a baby with Down syndrome. So this is the explanation of the calculated risk of down syndrome. Secondly, NT (nuchal translucency) and blood tests which she underwen...  Read Full »

ask-doctor-img Ask a Doctor Online

* guaranteed answer within 4 hours
Chat with a Doctor

Chat with a Doctor

Starting @ just $29.99

Search for a Health Issue


 


Disclaimer: All health Q&As published on this website is not intended to be a substitute for professional medical diagnosis, advice or treatment by a trained physician. Seek the advice from your physician or other qualified health-care providers with questions you may have regarding your symptoms and medical condition for a complete medical diagnosis. Do not delay or disregard seeking professional medical advice because of something you have read on this website.