I have it done every couple of months due to Lemtrada. Since Tec affects your lymphocytes, they're watching to make sure you dont develop chronic lymphopenia (too low), which will leave you more susceptible to infections. Its OK to be a bit low, as long as it is stable.

Tecfidera will kill your WBC. That's why they do the testing. They may also do a test to see if you have JC disease which causes brain fever(death). Tecfidera will f you up if you have JC disease.

I also had this done. I had a severe yeast infection of the esophagus and the test was to check on suppression of the immune system. I am on Avonex and the test checked to see if I needed to change medications. As it turned out it was fine. I made the mistake of trying to interpret results. The ratio is what matters not the high and low according to my neurologist.

Hi my name is Helen I have started to Teairra about 1 0 months ago, and do you have any weight loss issues with with it

wow, your Dr ordered that on your blood work? that's really good. That the T cells count. I don't know the meaning of high or low, but I've never had that analyzed in my blood work. You have a good neurologist then.