Accuracy of non-invasive DNA test results in Hong Kong

No testing organization can say that 100% is accurate.

To approach 100%, you need to meet the following requirements: (This requirement is based on Hong Kong Asia Medical, where I tested it. )

1, pregnant for more than 7 weeks, embryo larger than 10 mm.

I haven't given birth to a boy for half a year.

So there is basically no big problem.