I've been to the doctor as I've been feeling off and they've run some bloods. Would you guys help me understand what they mean:
Serum TSH: 0.70 mu/L - range 0.35-5.5
Free T3: 5 pmol/L - range 3.1-6.8
Free thyroxine: 19.5 pmol/L - range 12-22
Serum urea: 3.9 mmol/L - range 2.5-7.8
Serum creatine: 61 umol/L - range 49-90
Serum sodium: 141 mmol/L - range 133-146
Serum potassium: 4.0 mmol/L - range 3.5-5.3
Serum ferritin: 34 ug/L - range 10 - 291
Serum iron: 19.7 umol/L - range 9-30
Serum transferrin: 3.18 g/L - range 2.5-3.8
Serum B12: 94.3 pmol/L - range >37.5
Vitamin D: 97 nmol/L - range 50-250
I'm GF, take my thyroxine tablets last thing at night so they're fully absorbed, had this blood test taken in the morning.
Currently on 125mg of levo, one vitamin b complex tablet, one d3+k2 100µg tablet, two B12 tablet, one viviscal hair tablet and one florisine iron tablet.
I still feel unwell, I don't know why and I'm hoping there's something within the above that makes sense.
Thanks all 🙂
Written by
KiwiBird218
To view profiles and participate in discussions please or .
It was taken at 10am (couldn't get in any earlier, I know before 9am is optimal).
I just started on the florisine iron tablet so hopefully that will help over time. Will also look into that link thank you.
My GP put on my notes “TSH level suggests adequate thyroxine replacement”. Not sure I can willingly get them to budge as they were reluctant to up me from 100 to 125mg a few months ago 🙁 Does levo help with T3 levels, I've never been quite sure?
You could push hard if you wanted to. use NICE guidelines for back up.
The first paragraph in the NICE (NHS) Thyroid Disease, Assessment and Management guidelines says :
nice.org.uk/guidance/ng145
"Your responsibility”
The recommendations in this guideline represent the view of NICE, arrived at after careful consideration of the evidence available. When exercising their judgement, professionals and practitioners are expected to take this guideline fully into account, alongside the individual needs, preferences and values of their patients or the people using their service. It is not mandatory to apply the recommendations, and the guideline does not override the responsibility to make decisions appropriate to the circumstances of the individual, in consultation with them and their families and carers or guardian. “
Serum ferritin level is the biochemical test, which most reliably correlates with relative total body iron stores. In all people, a serum ferritin level of less than 30 micrograms/L confirms the diagnosis of iron deficiency
Never supplement iron without doing full iron panel test for anaemia first and retest 3-4 times a year if self supplementing.
It’s possible to have low ferritin but high iron
Test early morning, only water to drink between waking and test. Avoid high iron rich dinner night before test
If taking any iron supplements stop 3-5 days before testing
Eating iron rich foods like liver or liver pate once a week plus other red meat, pumpkin seeds and dark chocolate, plus daily orange juice or other vitamin C rich drink can help improve iron absorption
This is interesting because I have noticed that many patients with Hashimoto’s disease and hypothyroidism, start to feel worse when their ferritin drops below 80 and usually there is hair loss when it drops below 50.
Thank you for your incredible patience while you have been awaiting the outcome of our ferritin reference range review. We conducted this with Inuvi lab, which has now changed the reference ranges to the following:
Females 18 ≤ age < 40. 30 to 180
Females 40 ≤ age < 50. 30 to 207
Females 50 ≤ age < 60. 30 to 264
Females Age ≥ 60. 30 to 332
Males 18 ≤ age < 40 30 to 442
Males Age ≥ 40 30 to 518
The lower limits of 30 are by the NICE threshold of <30 for iron deficiency. Our review of Medichecks data has determined the upper limits. This retrospective study used a large dataset of blood test results from 25,425 healthy participants aged 18 to 97 over seven years. This is the most extensive study on ferritin reference ranges, and we hope to achieve journal publication so that these ranges can be applied more widely.
Content on HealthUnlocked does not replace the relationship between you and doctors or other healthcare professionals nor the advice you receive from them.
Never delay seeking advice or dialling emergency services because of something that you have read on HealthUnlocked.
Test results - can anyone help?
Results help please
Blood test results and symptoms 
New blood test results
