reading lab reports

[TriciaK]

I know this has been covered before, but I can't find the info: Is there a place where we can go to understand what our lab reports say? For instance, I saw my oncologist yesterday and he is concerned about some values outside the reference range on my recent blood test, especially that there seems to be some kidney problems. He is scheduling some tests, including my usual yearly PET/CT scan, which will now include the kidneys as well as lungs. I have had a severe pain in the right kidney area for about a week, like someone hit me there with a baseball bat, but no apparent sign of fever or infection. Here are the values:
Hematocrit: L@ 33.2---RDW:H@ 15.4--- Eosinophils: H@ 9
Glucose: H@ 110--- Urea Nitrogen(BUN): H@ 28
Creatinine: H@ 1.8--- GFR EST.: L@ 29
If anyone can explain these figures and/or give me the website to check, I would appreciate it. Thank you! and hugs! Tricia