question: Hi Doctor, This is the report of Double Marker test of my wife: Corrected MoM and calculated risks:  fb-hCG 165 ng/ml 3.82 Corr. MoM PAPP-A 1.84 mlU/ml o.45 Corr. MoM  Ultrasound data:  Nuchal translucency 1.00 mm CRL 60 mm 0.64 MoM Gestational age by CRL 12+ 2 Nasal bone present Gestational age on the day of serum taking 12+ 2  Risk at term:  Biochem. risk +NT 1:356 (below cut off). Double test >1:50 (above cut off). Age risk 1:1515. Trisomy 13/18 +NT.