NIPT cost with BCBS insurance

Hi Mamas,

Hope you are all doing wonderful. My question is about NIPT cost via Labcorp. My OBGYN informed me that NIPT wouldn't cost more than $350. But I was charged $630 almost twice as what was told by my OBGYN. I don't understand the breakdown of this invoice either. Wondering what an average NIPT costs. I don't have any genetic carriers.