Nipt test

Ok ladies that have done the Nipt test or also known as harmony test I'm not sure how exactly it works I don't know if my insurance covers it they couldn't tell me lame I know so ob gave me the kit I took it to the lab got it done and they gave me a card so I could sign in on line.. So how do I know if insurance covered it how do I get my results? The ma told me when I logged on it would give me a price and I could decide to get it or not 😐 I'm so lost 
Help plz