Nipt after NT

godisgood

Hi ladies pls help me out here.

I had my NT scan and blood work at 12 weeks and 2 days. And NT was 1.0 . And they said everything looks good.

Now my doc calls back after 11 days and asks for NIPT. I'm 36 yrs old.

I'm concerned y wud they ask for NIPT if NT was normal