Sometimes it will come back inconclusive if the sex is a female because the can't determine it was the babies information vs yours. Not sure hay will make sense but I have been told that before.
What kind of testing did you do? We do cvs every time and I've never heard of that. I so know that they have to compare your dna with the baby if it's a girl just to be sure
Re: Inconclusive gender
ET 9/10 - transferred 1 perfect 5AA blast
7dp5dt BFP ~~ Beta on 9/19 - 77.4 Beta #2 on 9/21 - 357
Low heartbeat on 10/7 86, lower heartbeat on 10/11 76, no heartbeat 10/14/13. D&C 10/15/13
Tests revealed MTHFR c677t mutation, put on Folgard.
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FET #1 1/6/14 - 4BB blast - BFN