There is no harm that I am aware of - but it may not be considered necessary depending on the source. For example, some insurance providers will only reimburse

There is no harm that I am aware of - but it may not be considered necessary depending on the source. For example, some insurance providers will only reimburse after you're at a certain stage. I can tell you that if I or someone I love was diagnosed, I would get CGP immediately. Potentially avoiding a round of chemo that probably wouldn't even work... that's worth it to me.