Stopping supplements before B12 Test?

[InLiverpool]

I recently visited my GP because of worsening fatigue and tingling in feet ,hands around my mouth. In addition I had frequent bouts of mouth ulcers and generally a sore mouth. My balance and movement had also taken a downturn.

After refusing the offer of a new better low dose anti depressant my bloods were taken.

Later I was informed everything was normal no action required. I asked for a print out and I could clearly see that despite my good nutrition my B 12 was very low. I decided to take a 1200 ug dose of B12 in the form of a spray. After two months I feel a lot better.

I have now decided to have a private B12 test taken. Will my supplement B12 skew or disguise any problems? Should I stop supplementing before the test, if so , how long before should I stop?

[rosewine]

My friend was told to stop taking any B12 supplements for several weeks before her B12 blood test.x

[Rosepetal60]

When I was going to have a private blood test for B12. The instructions were to avoid taking B12 for 2 weeks. I was a bit concerned about it initially but I had by that time built up my B12 by taking Kefir as well as high strength B12. So I was in a good situation to follow the instructions without worry.