Had a blood test last week. One of the tests was for B12. This was added because I’m experiencing constant pins and needles. The number came back as 221 which was in the normal range of 200-900 listed on the results printout. I wasn’t told to fast for this test and so had eaten breakfast a couple of hours beforehand. I have since discovered (by googling) that I should have fasted for 6-8 hours.
So my question is ‘did not fasting skew my result’ . Would my result have been lower If I had?