Do I stop supplements prior to blood test? Confused.

[Sue777]

I have been taking vit D B12 iron and selenium for 2 months as advised by GP as my last blood test showed low levels. I have my 3rd blood test since hypo diagnosis at the end of the month and GP has asked for these supplements to be tested again as well as thyroid function. A previous post advised that supplements should be stopped 2 weeks prior to test. So I should stop them today. However I am taking these to help improve my health and surely stopping them for 2 weeks could be a step backwards? Any advice please..

[shaws Administrator]

I would stop your B12 and selenium now otherwise you won't know if/or how much you are deficient. You can start immediately after your blood test.

[crimple]

So did you get your selenium tested on NHS? I've just paid fro my test along with Iodine, Zinc, Magnesium and Calcium!