This is something I've wondered about too. LL brings up some good points. I wonder if it would be different if this were an issue of mental health or physical health, in other words, would it be appropriate and "humanitarian" to run a test on a patient's blood without their consent if they were mentally unstable or at risk for a disease or debilitating condition but were too stubborn or in denial about the possible condition?
Personally, I think everyone should be required to have their hormones checked as part of a routine physical, especially women, due to the extra complexity and certain risk factors that women have to deal with.
This issue again is the patient's unwillingness or denial. If many of us wait for our low lib spouse's stamp of approval before taking any action to improve our situations absolutely nothing will happen. Desperate times may require desperate measures. The trust issue could definitely be a problem if the info leaked out about the test. I think suggesting that the doctor suggest a test, WITHOUT THE DOCTOR SAYING THAT THE SPOUSE SUGGESTED THE SUGGESTION, would be something to consider. These hormone imbalances don't only affect our relationships and the well being of our families but can also lead to serious health problems that, if undetected and untreated, could even lead to death. If you knew that someone you loved might die if they weren't tested say, for cancer, would you take drastic measures to have them checked? Hormone imbalance can lead to cancer and other debilitating health issues.
All points of this one need to be carefully considered, in my opinion.