I get you don't like NTR, but this is waaaaaaay off.
First of all "a quick online search" is not a source of information you (or I, or anybody) should trust.
But to continue within this path, if a lab reports that 30% of their tests report a negative (no relation) result, it makes me think of the reasons behind someone getting tested. And one of the main reasons I can think of, is someone claiming I am the father of X and I don't think I am. I doubt people do otherwise, it's not like I'm sitting here commenting in lewdcorner and all of a sudden I think: hmmmm... maybe my dad isn't my dad, better go for a paternity test.
What I'm trying to say is that if everybody got tested systematically and there's a great percentage of negatives, that could mean something. But people get tested because their paternity is being challenged, not because everything is normal and why not do it.
Same way would happen if you read statistics of labs who test STDs. Let's imagine 80% positives. OMG we live in a world of STDs! Promiscuity and loose people are to blame! Well no, take it easy... people who *think* they might have something are the main individuals who get tested, probably looked up the symptoms they are having and decided to get tested. Guess what, they probably do have an STD.
Also caps and big sized letters may convince and alarm some people but I'm not one of them