I would take this test with a grain of salt. On some other baby forums there are entire threads dedicated to this particular company having lots of false predictions as well as the company not responding to customers. The only accurate way to tell the sex of your baby is to give birth. I've had a few friends told one sex, then after another ultrasound be told the opposite.
My understanding is it's fairly accurate, but ONLY if the sample remains uncontaminated, and I think it's fairly easy to accidentally contaminate the sample.
DS1: Nov. 2013 DS2: Jan. 2016 DS3: Dec. 2017 Baby #4 on the way!
Re: Sneak peak gender test
DD1 EDD 9/29/2015, Born 9/24/2015
DS1 EDD 1/3/2018, Born 12/26/2017
BFP #3 3/21/2019, EDD 11/29/2019, MMC/D&C 5/7/2019
BFP #4 6/28/2019, EDD 3/12/2020
DS2: Jan. 2016
DS3: Dec. 2017
Baby #4 on the way!
DD2 8.22.13
MMC 1.4.17 at 16w
Expecting #3, EDD 1.29.18