MrChris wrote:Would either of these blood tests be relevant for a person diagnosed with MS?
Welcome to ThisIsMS, Chris (MrChris).
As you told us elsewhere, you had 5 months of testing: MRI, blood tests, visual evoked potential, lumbar puncture. In my opinion (I have no medical background), all these tests and imaging help to give the doctor a more complete picture of your health situation.
The C-reactive protein (CRP) test measures general inflammation, which is part of MS. It is my understanding that the hs–CRP (high sensitivity-CRP) is especially useful in determining a heart problem. If by "differential wbc" you are referring to what my lab calls "CBC with Auto Differential," I think it is useful to know the different components as they contribute to the overall picture – possible anemia, B12 deficiency, etc., e.g., MCV (mean corpuscular value) is elevated in the case of megaloblastic anemia.
Many other tests are useful, such as the homocysteine (Hcy) test, which measures an amino acid that is damaging to the blood vessels; this test is slowly being recognized as a better indicator of the risk of heart disease than cholesterol testing.
Once we have been diagnosed with MS, doctors have a tendency to chalk up any new symptom to MS. It is entirely possible that we can have additional conditions totally unrelated to MS.