Hello..
I currently work for a Biometrics screening company (the company that completes the Blood pressure, cholesterol screening etc.) for various associates of the company requesting.
When we have a woman who is pregnant, we also ask her to use her pre-pregnancy weight if she chooses. We do not have an area that we would check to note if she was pregnany or not. That being said, the company we are working for, lets say "Microsoft" as an example, when Microsoft gets the results, it is only in aggregate form. So that would mean, for instance, 57% of their associates have increased blood pressure, or 42% of their associates are overweight, etc. They would not have access to individual results. It is for your privacy. The wellness screenings are done to help possibly bring down insurance costs of you not knowing you may have potential treatable and avoidable conditions like heart disease or diabetes. There are many people out there who are not aware of their risks and dont know they have high cholesterol, or high blood pressure, or pre-diabetes,. If theses people become educated and change their lifestyle, the impact on "Microsoft" in the long run, as far as paying insurance bills, would be lower. It also tells the company what types of wellness issues to concentrate on with their associate population.
Yes, they do offer (usually) reductions in medical preemiums or other benefits to the associates for participating in out "wellness screenings", but it is from the aspect of completing theses screening and finding out your risks, versus trying to find out how sick or unhealthy you may be and using it against you.
Also, as a side note, it is illegal to not offer insurance to some who may have a "pre-existing condition" as long as they did not have a lapse in coverage.
I hope this helps a little to you. If you have any other questions, please let me know.
B.