hi upnorth, your tests are interesting, i wonder sometimes when they are in the low range that your immune system is tiring out. Its just another example of immune dysfunction in cfs. Actually I rember my cd4 count was low at one stage and my doc said something similar, he then recommended natural immune stimulants like astragalus etc, this improved my cd4 count but it didnt really improve my symptoms, i suppose it may have stopped me getting worse. You might be able to get immunoglobulin injections if your immune system is low and shown on blood test, have read where some cfs guys improve on these, but its finding a quack that knows what he's doing. good luck!