Susie i am taking my medichecks blood finger test tomorrow or wednesday this week been on 150mcg levo now since oct 2018 after changing back from 2 yrs on naturethroid...what are the vits i need to stop for a good true result and is it 24hrs of no levo? And just drink water for 8 hrs or so before test ..i wanted to give it 6/7 mths before test. Thank you in advance Christina xx
Help from Seaside Susie: Susie i am taking my... - Thyroid UK
Help from Seaside Susie
Sorry, in a rush, tea's ready. Copy and paste job which I think tells you everything you need to know
When doing thyroid tests, we advise:
* Book the first appointment of the morning, or with private tests at home no later than 9am. This is because TSH is highest early morning and lowers throughout the day. If we are looking for a diagnosis of hypothyroidism, or looking for an increase in dose or to avoid a reduction then we need TSH to be as high as possible.
* Fast overnight - have your evening meal/supper as normal the night before but delay breakfast on the day of the test and drink water only until after the blood draw. Eating may lower TSH, caffeine containing drinks affect TSH.
* If taking thyroid hormone replacement, leave off Levo for 24 hours before blood draw, if taking NDT or T3 then leave that off for 8-12 hours. Take your thyroid meds after the blood draw. Taking your dose too close to the blood draw will give false high results, leaving any longer gap will give false low results.
* If you take Biotin or a B Complex containing Biotin (B7), leave this off for 7 days before any blood test. This is because if Biotin is used in the testing procedure it will give false results (Medichecks definitely use Biotin, they have confirmed this and the amount of time to leave the supplement off).
If doing the ULTRAVIT test which tests Active B12, leave off B12 supplement for 7 days.
Many thanks so sorry to bother you x
Hi Christinah61..I'm pleased you asked this question, my surgery called me to go in for a review ( been doing private tests) and I have been wondering when to stop vits myself , so thank you..Hope you are continuing to do well on levo and t3. X