What does a high Folate level mean?

I have seen a couple neurologists, one who specializes in Multiple Sclerosis. I had a brain MRI a couple months ago and they found multiple lesions in the white matter. The first neurologist tested me for Lupus, Lymes and a few other things and the tests came back negative. I decided to go to someone who specialized in MS just to make sure. He said it could be MS, but it wasn't a textbook case. He did some more blood work and my Folate levels came back high. The normal range is up to 21 and mine was 38. The B12 levels came back normal. Does this mean anything?

I can't remember if they shaked the tube or not. Also, I didn't really eat anything that day and the I did the labs early afternoon. I did eat a pack of crackers about an hour before.

I tend to get low Folate levels, and I eat Beef Liver, spinach, Great Norther Beans, (dried beans, which you soak overnight and cook with meat).
Did they tell you this was too high. Normal B12 levels, mean you do not have to have iron supplements.
Now I do know that folate levels can temporarily rise in patients who have just eaten foods that contain folic acid.
It used to be easy to diagnose people who had pernicious anemia, but now because of the food in most grocery stores contain folic acid it is very hard to diagnose.
the next time you have blood work, watch the tech, does he/she slowly tilt the vial with the red rubber top back and forth or does he/she shake it? It can make a difference in your test results.

At my lab, the normal folate range for an adult is 3-16ng/mL. Other labs use the range 2.7-17ng/mL. I've never seen the range of 21 you referred to. Abnormally high folate levels are found with some anemias, such as pernicious anemia. If all the other labs were within normal levels, I suggest you speak to your doctor about the significance of this.