Going back to something I said in another thread:
as the science of the human genome is essentially in its infancy, it can't be tinkered with due to ethical concerns, and the current methods of investigation are prone to causation fallacies at this stage, it has to be treated with a healthy dose of skepticism. It wouldn't be entirely inaccurate to say that in some ways we're looking at the 21st century version of phrenology.
In other words, I wouldn't put any real value on the gene test. At best they can tell you that your DS has somewhat elevated odds of certain reactions compared to the population at large. They still can't tell you what specific outcomes your DS will experience.
