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Pauline
Pauline, Doctor (MD)
Category: Health
Satisfied Customers: 8631
Experience:  Medical Doctor & Registered Pharmacist. Worked as Community pharmacist for 17 years.
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Do I need to increase synthroid from 62.5 mcg to 75 mcg I ...

Customer Question

Do I need to increase synthroid from 62.5 mcg to 75 mcg? I am tired, weak, light-headed, sometimes mildly dizzy and exhausted about a third of the time. These periods generally last from 3 to 5 days in sequence. TSH = 3.337, T4 = 8.5, T3 Uptake = 35, Free Thyroxine Index = 3.0, RBC = 4.10, MCV = 100, MCH = 35.3
Submitted: 10 years ago.
Category: Health
Expert:  Pauline replied 10 years ago.

You have included some blood results for RBC, MCV and MCH. Looking them, although you have not included units, I am concerned about the possibility of anaemia.


Anaemia can be related to a number of reasons including iron deficiency, vitamin B12 or folate deficiency (although MCV not high enough to suggest this) and alcohol intake amongst other problems.


Before you adjust your synthroid you need to discuss these results with your doctor. Some blood problems are autoimmune related and this can be linked to thyroid problems. Further blood tests will be required to identify serum iron, ferritin and transferrin saturation to rule out iron deficiency anaemia.


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