My elderly mum is having some symptoms which she describes as an occasional racing heart, especially at night, dizzy spells, feeling cold in the feet and a daytime lack of energy. The GP is currently arranging a 48h ECG as the short one showed nothing. The GP also arranged for a blood test and I managed to get a hard copy of today from the surgery, some of the results:
Serum urea level8.3 mmol/L2.00-7.80mmol/L
Serum ferritin113 ug/L15.00-300.00ug/L
Serum free T412.6pmol/L8.80-21.00pmol/L
Hemoglobin normal, full blood count values all normal.
Initial comments on the blood test & at the surgery was that there seems to a kidney problem. She is anyway going back to the GP once the ECG testing is completed.
One thing which caught my eye was the TSH & Free T4 values which strike me as potentially less than optimal in range. She has never been diagnosed as hypothyroid or taken any medication. Are these a normal thyroid reading for an elderly lady? Next step I am thinking is to get the free T3 tested (privately as usual). The rest of the blood test was normal and I make sure she takes D3 and B12 in her daily breakfast routine. Anybody got any ideas what else should be tested (either via GP/or private)? Are the (slight) under-performing kidneys a sub-set of an under-performing thyroid (or vice-versa)? If the FT3 is also found to be low in range, is it not too late for her to start thyroid medication at her age? Any comments greatly appreciated.