You don't have to argue. Ask to have the results HANDED to you. And you could just say that you want to look them over.

FWIW, most labs don't only publish the results, they also publish what they consider to be "normal" (reference range). So you don't need to be a genius to figure that part out.

With blood lipids, what you'll learn is that, for example, it's NORMAL for total cholesterol and LDL to rise on a LCHF WOE, because, if your body is using fat for its energy, then it should, by logic, have more in the bloodstream, right? And the fat that it uses is LDL.