Hi, I got my double marker test done at 10 weeks 6d as per the suggestion of my gynaec. I got NT scan done at 13 weeks 1d. The results of NT scan are fine. But double marker test shows high risk of 1:62 for down syndrome. And the PAPPA levels are very low. They are 221 mU/L. And about 0.16 MOM. I have repeated the double marker test. Will the Pappa levels increase at 13 weeks? Will the repeated test show increased levels of PAPPA?