DNA tests normally are invented by a research-group, they nowadays get a patent (I hope the word is the same in English) and then use it themself or sell it to a commercial lab. DNA-research is expensive, at least in Germany the universities have a chronic lack of money. This is the reason why very often only one lab has the test. Other groups work on the same problems or improve the first published test so on long term there are more labs and cheaper tests.
But DNA-testing is at its beginning it will take time.
This brings us back to the idea of an international DNA-database. Mijke has found a cheap lab as far as I remember. Everybody can look in his own country for tests and labs and we can use it alltogether.
Ina
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