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Thyroid hormones blood test

The thyroid gland is part of the endocrine system and is responsible for controlling the metabolic rate (or pace) of all the processes in the body.  If there is a deficiency of circulating thyroid hormones, thyroxine (T4) and triiodothyronine (T3), every function of the body tends to slow down.  Conversely if there is over production of thyroid hormones, the metabolic rate speeds up.  Read more about how we can help hypothyroidism, Hashimoto’s disease or hyperthyroidism and Grave’s Disease here and read our published medical paper here

Thyroid Stimulating Hormone (TSH)

TSH is the hormone produced by the pituitary gland that helps control the thyroid gland.  TSH prompts the thyroid gland to make more thyroid hormones and usually increases when T3 and T4 levels drop.  When T4 and T3 levels become too high this switches off the production of TSH, by the pituitary, telling the thyroid to slow down production of thyroid hormones.

Free T4 and Free T3

This measures the amount of hormone produced by the thyroid.  T3 is the more active hormone and conversion from T4 to T3 is important to measure.  If T4 and T3 levels are normal despite an abnormal TSH, this may indicate an issue with the pituitary gland or reduced peripheral uptake of thyroid hormones.

Reverse T3

Reverse T3 (rT3) is produced as a secondary product and is not metabolically active.  There may be an increase in rT3 during conditions of stress.

Thyroid antibodies

Thyroid antibodies (anti-thyroglobulin and anti-thyroid peroxidase) are found in autoimmune thyroiditis such as Hashimoto’s or Grave’s disease, the most common forms of hypo- or hyperthyroidism.  The measurement of thyroid antibodies is accurate where, in contrast, the TSH value can fluctuate quite significantly and is less reliable.  It is also important to differentiate between autoimmune thyroid conditions and non-autoimmune as the nutritional approach is quite different. In addition, thyroid antibodies in the absence of altered TSH or T4 can indicate an increased risk of developing a thyroid condition in the future.

 

What is measured in this profile? 

  • TSH
  • Total and freeT4
  • FreeT3
  • FreeT3: FreeT4 ratio
  • Reverse T3 (optional)
  • Antibodies – anti-thyroglobulin (anti-Tg) and anti-thyroid peroxidase (anti-TPO)

 

Who should take this test?

  • Anyone experiencing symptoms of thyroid dysfunction,
  • Patients already diagnosed with thyroid dysfunction even if on medication (Eltroxin) but who are still experiencing symptoms
  • Patients who may have subclinical thyroid dysfunction or may be in the early stages
  • Anyone with unexplained infertility

 

Test Procedure

  • You need to be fasting for 12 hours in advance of this blood test
  • The test results will be returned to your nutritionist within 3 weeks. Test results will be interpreted by your nutritionist and a protocol tailored accordingly.

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Reduce diabetes risk

1 in 5 Irish people have a family member with type 2 diabetes.  Find out if you are at risk and 3 things you can do to reduce your risk.  Read more  or watch Heather explain more on Virgin Media.

5 healthy habits to build

Take the time during Level 5 to put some healthy habits in place. Our top five habits will have you looking and feeling better by December.

Eat green

Our own Heather Leeson shared her top tips on healthy and sustainable eating at the IBEC KeepWell summit .  Watch her share more tips and tricks on Virgin Media Weekend AM

Nutrition for fertility

Trying to conceive?  Ciara Wright was recently interviewed by Ben Brown on immune health and personalised nutrition for fertility.  Listen in here and contact us for more information

Working from home

We know how difficult it is to stay healthy while working from home at the moment.  Watch Heather share her top tips on Virgin Media

Click picture to download our 4 week nutrition plan for fertility with Sims IVF

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Testimonials

I just wanted to let you know that we had a beautiful baby. Please pass on our sincere thanks, we really appreciate it and obviously the fantastic result we achieved! Thanks to you for your very efficient and kind care during this time.A happy couple from Dublin
Thank you so much for all your help and support. We cannot believe our little miracle is here, I feel like we have won the lotto! I definitely think it was all the changes we made, she is a product of good nutrition!Anon, Carlow
I want to thank you for helping us both this year. Not only has my colitis settled down and I feel much better, you were also a huge part in helping us achieve our ultimate goal of getting pregnant. We will both be eternally grateful for this and thank you sincerely. D&GS, Galway
Compared to my last test 8 months ago the morphology increased from 3% to 35% and my DNA Fragmentation went from 37% to 22%. I could only have achieved these results with your assistance and expertise and would like to thank you for all the guidanceEP, Limerick
Thankfully we dramatically improved the quality of my eggs and were left with one viable embryo which went on to be a successful pregnancy! We are over the moon and thrilled with our little girl. I just wanted to send you an update to let you know and perhaps to give hope to others in a similar position and unsure about whether to try the nutritional approachSinead, Dublin
I feel so alive and energised. The added bonuses are a healthy BMI, normal cholesterol levels, 20kgs lighter and a reduction to my metabolic age by 20 years+. It has been so worth all the time and effort to create this new healthy lifestyle. Thank you for all your excellent advice and encouragement. Your professionalism and attention to detail has brought me to this transformed new state, a new me!Maria, Dublin
Since my first appointment the improvement in my health is amazing. Symptoms of my Inflammatory Bowel Disease have decreased and my energy levels have increased. My hair has become more conditioned and my nails are less brittle. I can honestly recommend a visit to Glenville Nutrition Clinic for a particular illness or as a boost to your general wellbeing E.K, Galway
I FINALLY I lost all the extra pounds I was holding for two years, and my digestion improved MASSIVELY!! Nothing compared to when I first came looking for help!! I WILL ALWAYS BE SO THANKFUL FOR THAT, you wouldn't believe how much good you did for me, I was lost. Fitness Instructor, Dublin
My journey with Glenville Nutrition has made a vast improvement in my health and well-being. You’ve helped me to adopt a completely new approach to food and healthy eating. To date I have lost 26 lbs. In just 7 weeks my cholesterol dropped from 5.8 to 4.4. My arthritic joints have vastly improved and I look forward to my daily walk. Friends and family have complimented me on how well I look!! Again my sincere thanks & appreciation of your excellent blend of professionalism, encouragement and compassion. Kathleen, Galway
I had expected the physical benefits, but the mental and emotional benefits were unexpected and glorious. I cannot recommend Glenville Nutrition highly enough. I think it is fair to say that working with them changed my life. Sometimes you don’t even realise how bad you feel until you start to feel better. That is a gift that you can give yourself. Sincerest thanks for all you did for me.Aisling, Kilkenny
I am so thrilled with having met you at Glenville Nutrition. The advice and supplements I have received is helping me enormously. I am feeling 1000 times better since I first started.Patient, Dublin

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Glenville Nutrition Dublin Clinic
10 Orwell Road
Rathgar
Dublin 6
Phone: 01 402 0777
Email: clinic@glenvillenutrition.ie



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Glenville Nutrition Galway Clinic
Steamship House
Dock St,
The Docks
Galway
Co. Galway
Phone: 091 726344
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