Maternit21 moms helping moms

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So I called LabCorp to see what my insurance estimate would be for the NIPT, and they said it’s like 500 BUT gave me an option to do a survey after the blood is drawn and said this will bring down the cost to 299. Has anyone used this? Is it a hassle to get them to adjust the price, obtain the survey etc?

With my first I used Natera and the billing part was a mess. Thanks!