Thyroid UK
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Advice needed about test results

Hi, I had a blood test 3 months ago with a TSH result of 6.1. The doc said I needed a further test in 3 months which I have just got the results for. My TSHis 5.75, antibodies 36 and free T4 15.3. The doc had not checked the results yet, I got the figures from the receptionist. I have lots of symptoms that seem to be worsening and I have been researching thyroid issues before I go back to the docs. My paternal aunt had an under active thyroid as well as coeliac disease (which is an auto immune disease) and my daughter also had coeliac disease. Have you any advice before I speak too my doctor? I think I have under active thyroid but don't think the levels are extreme enough for the doc to treat.


3 Replies


If TSH 5.75 is over range for a second time your GP should diagnose hypothyroidism and treat you with Levothyroxine.

If thyroid peroxidase antibodies are over range it indicates autoimmune thyroiditis (Hashimoto's). There is no cure for Hashimoto's which causes 90% of hypothyroidism. Levothyroxine treatment is for the low thyroid levels it causes. Many people have found that 100% gluten-free diet is helpful in reducing Hashi flares, symptoms and eventually antibodies.


Thank you, my doctor had now prescribed levothyroxin



For maximum absorption Levothyroxine should be taken with water 1 hour before, or 2 hours after, food and drink, 2 hours away from other medication and supplements, and 4 hours away from calcium, iron, vitamin D supplements, magnesium and oestrogen.

It takes 7-10 days for Levothyroxine to be absorbed before it starts working and it will take up to six weeks to feel the full impact of the dose. Symptoms may lag behind good biochemistry by several months.

You should have a follow up thyroid test 6-8 weeks after starting Levothyroxine. Arrange an early morning and fasting (water only) blood draw when TSH is highest, and take Levothyroxine after your blood draw.


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