Should I go for genetic testing?

From a posting to the Ovarian list
You could test negative for every known mutation to both the BRCA1 and BRCA2 genes, and yet still have a hereditary predisposition to ovarian cancer. Why? Because BRCA1 and BRCA2 are not necessarily the only transmissable genes which, if mutated, cause this predisposition in families. The other such genes have not yet been discovered, or cloned; but it's generally recognized that they may well exist.

Again, negative means--first and foremost--'no information.' In the case of an ovarian cancer patient testing negative for several mutations, the reliability of those results for those mutations is high. But you still cannot rule out a hereditary presidposition caused by some other gene, or by a mutation to BRCA1 or 2 that has not yet been discovered. BRCA1 is a huge gene and new mutations are still being identified.

As for women considering prophylactic oophorectomies first having BRCA1 testing: You could do this. On the other hand, you might not want to. You could jeopardize your future insurability and employability. And your own results as a woman not diagnosed with cancer would be meaningless unless a relative with ovarian cancer is tested also, as well as preferably as many other relatives as possible...that is, unless you have an 'informative' family. There are many other concerns, as well.