Confused whether to have an amnio . 1/134 for ds from blood test. Us is normal . Pls help ...

Hi,  i m 28 yrs . My first  baby normal healthy baby. This is my second pregnancy I did  nt scan & blood test on 12 week of my pregnancy. After one day doc called me and said I m in high risk of having ds baby ie 1/134. From my nt scan nt measurement is 1.7mm
Nasal bone seen. Every organs are normal . Only  my blood test put me in this risk. Blood test results are  free beta hcg is 5.4 mom and papa- a. Is 0.812 mom. My hcg is 5 x, s higher than normal . Should I need to do amnio. Now I m in 15 weeks pregnancy. Pls I expect suggestion from  someone experience this kind of results.  Help me

[Leyisel21]

ok those blood work exam to me their not accurate at all. at least for me it didnt help at all. i dnt know why they still use those

[handsfull611]

with a scan of 1.7 that is great anything less then 3.0 some say 2.5 but the official is now 3.0 is normal and great... your odds are high but I have found that the blood work isnt' accurate they are finding more false positives then not.. I had odd of 1:3 and my doctor is telling me that it's totally about my age and nothing else.. she goes by the ultrasound weather she suggest amnio to the mother or not... hope it was some help