In 1988 my wife and I were trying to have our first child. The was way before you could just go to the local pharmacy and get a cheap and reliable pregnancy test kit. Keep in mind also the both of us have always been very frugal. Both of us believe strongly in a penny saved, is a penny earned. So my wife found a place that advertised free pregnancy testing. We had no idea they were religious freaks as nothing led us to believe that was the case. OK, so great that will save us some money having it done at the Dr. When we first came in they gave us a sheet to fill out and most of it seemed pretty routine medical questions. One of the questions was whether or not we were considering an abortion to which we answered no.
So the wife goes back and after the test was initiated we both were led into another room and were again asked if we were considering an abortion. By this time warning bells were going off. We told them empathically no, that we were trying to conceive and have a child. By this time we were more or less hostages, because while we could certainly leave we wouldn't find out the test results. They then proceed to show us a film on abortions and it was extremely graphic, not to mention quite a bit of junk science thrown in about the high risk of abortion. After a few minutes of this we threaten to walk out at which point they told us the results of the test were inconclusive.
We wound up going to a real doctor and got a real pregnancy test. Lesson learned there's no such thing as a free lunch or free pregnancy test.
The short version is I'm not OK with religious groups doing this and you can bet your bottom dollar they are going to lie to people. If you look at the van they are already lying by pretending to offer "medical" service and concealing the true nature of what they are really doing.