Koolau
Give me a museum and I'll fill it. (Picasso) Give me a forum ...
I have some experience in the medical field and I have to say that even if your test results come back as "normal" is good to get them on paper so you can sit for yourself and study them afterwards where on the scale you are. Let´s say something simple as iron for example, you can be on the edge of too little but you are "Normal" in medical sense but still have very strong symtoms. I learned the hard way that if you are on the edge on either too much or too little your doctor wont let you know, so I study the tests myself and if I see I need to take more or less of something I do that and I do reschedule an appointment for that bloodtest often about 3 months so I can fill it up or reduce it (since the body is often slow to adjust).
Actually, I count on my doctor to alert me if something is (or isn't) an issue based on the numbers. I've often had number that fell out of spec. and the Doc has said not to worry about it. Another number was slightly out, and he ordered another test because the "downside" could have indicated cancer.
I agree it's good to find out as much about your numbers as possible, but at some point, you either need to trust your doctor or find one you can trust. I'm very impressed with my PCP (that has not always been the case, so YMMV.)