Your health care provider is likely to look at a number of things when deciding how to interpret your test results and whether or not you need more tests.

First, research has shown that a person's vitamin B12 Greenfood levels change over the course of a few weeks, and that these changes can be big for some people. If your vitamin B12 levels are on the edge of being too low or too high, or if the results of your lab tests don't match up with your symptoms or a previous diagnosis, you may need more tests.