Stopping medication before tests

[Pippi39]

Next week I am having a range of blood tests including full thyroid, b12 and ferritin

I currently take levothyroxine, b12 tablets (2x500) and liquid iron. When should I stop taking them? Test is 8.15 next Wednesday morning. Thank you

[SeasideSusie Remembering]

Pippi39

What do you want from your B12 test?

To see what you are holding on to B12 has to be left off for 4-5 months.

If you want to see what your dose is achieving then continue but take after the test on the day.

As you take B12, are you also taking a B Complex (needed to balance all the B vitamins)? If so then you leave off the B Complex or a Biotin supplement for 7 days before the test.

Iron supplements you leave off for 7 days before any iron test.

Last dose of Levo should be 24 hours before the test so around 8-9am on Tuesday next. Take Wednesday's dose after the test.

[Pippi39 in reply to SeasideSusie]

I am not taking a B complex. I need to start as it has been mentioned to me on here before. I wonder why endocrinologist didn’t tell me to take it?

Thank you

[SeasideSusie Remembering in reply to Pippi39]

I wonder why endocrinologist didn’t tell me to take it?

Because they know little to nothing about nutrients, they're not taught much, if anything, at med school.