Hi Cindi.
If you possible, try to request any markers of abnormal inflammation are repeated (if your physician doesn't remind you) when trying to decipher if you may have a potential undetected condition. I'm sure this will happen as its standard practice, however, if one is undergoing this kind of thing privately its easy to get lead on a wild goose chase when it comes to the immune system.
Often a short term virus can cause a temporary inflammatory state in the body which might abnormally
elevate ESR, CRP, Lymphocytes etc. Also other 'blips' in the radar can cause abnormal results for reasons that are of no real concern, even if with CFS diagnosis we often want them to be as we feel so ill, any explanation other than CFS would be welcome news and understandably so.
Looking at RF (Rheumatoid Factor) this too can be a 'one off' event I imagine. More importantly perhaps healthy individuals can have elevated RF (e.g. no symptoms of Arthritis) whilst conversely people with Arthritis (with symptoms) can have a negative RF! So what is helpful for your doctor to know is if your labs are abnormal, remain abnormal, and you have active symptoms that correlate with the test abnormality.
Usually if considering a diagnosis such as an autoimmune illness that Lotus 97 mentioned (Sjogren's syndrome/Lupus which looks at antibodies such as ANA/ENA including anti DNA antibodies), patients usually have to wait 6 weeks or more before a second blood draw is taken of inflammatory markers to relatively rule out an infection explaining the current abnormality that might occur in lab results. When this happens, then a new diagnosis can be considered.
To make things even more complicated a medical diagnosis can be tentative, so a wait and see approach is needed in many cases. Also I would always seek a second opinion if you were diagnosed with Arthritis as this may then exclude you from a diagnosis of CFS which could be useful if you are getting poor quality health care due to the label of CFS. Certainly people suffering with Fukuda criteria CFS (unexplained chronic fatigue) can develop other medical conditions, especially long-term, however one can debate that who knows how long one actually had undiagnosed Arthritis causing explained chronic fatigue... if this is what one is subsequently diagnosed with.
This website can be quite useful when wanting to look up explanations for abnormal labs, although the information
is somewhat brief.
http://labtestsonline.org/
As can the NIH's medline plus.
http://www.nlm.nih.gov/medlineplus/ency/article/003548.htm
I hope you get a satisfactory answer Cindi and your levels return to normal.
All the best.