SUBREDDIT: r/AskReddit
TITLE: Had to consent to "voluntary" research study to donate plasma. Is my logic flawed or should it have stated "mandatory."
POST: So I went to donate plasma because they are offering quite a bit of $$$ and I'm strapped for cash at the moment. Anyways, I was answering questions and the machine started going on and on about a new research study for detecting Hep B quicker than the standard procedure. Anyways, it went on stating that the new test was "voluntary" and I could opt out by not consenting. When it came time to consent I chose "no." Afterwards, they pulled me into an office and asked me why I had not consented to the test. I said because it clearly stated that I had the option to do so. Anyways, the lady said that I had to consent to the test to give plasma to which I replied "well, shouldn't you have called it mandatory then?" She just kept repeating that giving plasma is "voluntary" to which I agree. However, much like getting a job is voluntary, when they tell you that you must take a urinalysis test they do not go and call it "voluntary." There was nothing in writing that stated I had to consent to the research study to give plasma. Anyways, I ended up just opting in but I still feel like I was forced into consent.
TL;DR: 
Went to give plasma. Told I could say no to research study. Forced to consent to give plasma because giving plasma is voluntary. Feel like they should change their wording to "mandatory" for the research study.