I doubt it though it may have been tested along with the B12 - or not at all. You may have to request it be done.
It is important that your Folate level is monitored as this is essential to process the B12.
There is a complex interaction between folic acid, vitamin B12 and iron. A deficiency of one may be "masked" by excess of another so the three must always be in balance.
Symptoms of a folate deficiency can include:
symptoms related to anaemia
reduced sense of taste
diarrhoea
numbness and tingling in the feet and hands
muscle weakness
depression
Folic acid works closely with vitamin B12 in making red blood cells and helps iron function properly in the body and your B12 levels appear to be at the lower end of the range.
I am not a medically trained person but I've had P.A. (a form of B12 deficiency) for more than 45 years.
Sadly the Intrinsic Factor Antibody (IFA) test is unreliable in that it gives false negatives in people with PA half the time. So a negative result doesn't mean that you don't have PA. However, a positive result is a sure-fire, 95% certain indicator of PA.
The same with the serum B12 test - it only measures what is swirling around in your bloodstream not what is actually getting into the cells.
Symptoms of B12 deficiency tend to develop slowly and may not be recognised immediately. As the condition worsens, common symptoms include:
Weakness and fatigue
Light-headedness and dizziness
Palpitations and rapid heartbeat
Shortness of breath
A sore tongue that has a red, beefy appearance
Nausea or poor appetite
Weight loss
Diarrhoea
Yellowish tinge to the skin and eyes
If low levels of B12 remain for a long time, the condition also can lead to irreversible damage to nerve cells, which can cause the following symptoms:
Numbness and tingling in the hands and feet
Difficulty walking
Muscle weakness
Irritability
Memory loss
Dementia
Depression
Psychosis
Are your symptoms similar to the above?
However your thyroid problems may put you at risk of developing a Vitamin B12 deficiency and it's probable that your doctor will know that.
B12 levels aren't particularly useful after B12 injections as normal range doesn't really apply - what is important is symptoms - though its difficult to unravel when there are other conditions that have similar symptoms such as hypothyroidism.
Some people will be fine with levels of 300 even after injections but others won't be fine with levels in the normal range.
How long after your loading shot was the blood test taken. 300 is generally on the low side for someone who is on B12 shots?
If you have a B12 absorption problem then your levels are astronomic just after and then gradually drop over time so not sure what your GP might mean by 'keep levels steady' its not a treatment that will do that. He may be referring to the levo ... though the normal range isn't that good a guide if you are on levo.
If you have the results for thyroid then suggest that you post them on the TUK forum
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