You'll see a striking similarity between your results and the ones discussed in this thread where you'll find lots of relevant guidance in the comments: healthunlocked.com/thyroidu...
Just to second Marz , these results are as bad as they look. Do you have an appointment booked for the near future with the most competent GP in your practice?
SlowDragon has put it in a nutshell Make notes about the clinical guidance for treatment for all of those in the link so that you have them handy to help your discussion.
Just to dot i and cross t - are you receiving any treatment at present, if so, which supplements at what dosage and for how long? Have you had infusions for iron in the past? Have you had investigations for B12 levels (e.g., Coeliac's Disease; H Pylori; Intrinsic Factors antibodies)?
Results taken 1 week ago, iron infusion done 2016 and I have symptoms of coeliac and h pylori but no investigations and haven't been checked for intrinsic factor
If you've had iron infusions previously, were you discharged from haematology but given any advice to return for more infusions if your results fell beyond a particular level? That's the normal strategy for managing people with your results. Mention this to your GP but, if you can, contact the dept. that gave you your infusions previously and update them with your results and request another infusion. You're obviously not managing to maintain an adequate iron status with the ferrous fumarate.
An extended history of folate anaemia makes me question your B12 status which is already just below the reference range. The problem is that folic acid supplements may confound the results of B12 investigations as they should be done *before* starting folic acid because there are some close relationships between iron, folate, and B12 deficiencies/anaemia.
And, 800IU is a maintenance dosage for someone with a deficiency whose level has been corrected - it can not rectify a severe deficiency. Whether or not you've had them in the past, you clearly need loading dosages again because 5 years later, your results are truly woeful.
Has your GP seen these results or were they private?
Discharged because ferritin was back up to 187 (15 - 150) but told the infusion was a one off and haematologist told GP to monitor ferritin and make sure it didn't go below 50
OK, then I'd hope your GP practice already knows that your results need swift and greater intervention. Not least because your ferritin is plainly well below 50.
You need the interventions detailed in this thread for several of those results. Please let us know the outcome of your appointment.
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