Some genetic disorders can be "screened" for. This means taking a sample of blood, extracting the DNA and locating the gene that causes the disorder. The gene can then be identified as the normal gene or an abnormal gene liable to cause the disorder.

In KS and HH it is not this simple. There are already 8 different genes that have been known to cause the condition and it is very likely there are more. Only about 30% of KS / HH cases have a known genetic cause.

It would be impossible to test for these 8 different genes, and even if you did it would not rule out the possibility of other genes being involved.

There is no one simple genetic test available for KS or HH at present.