B12 at 290 is too low. Do you have any symptoms/signs of B12 deficiency b12deficiency.info/signs-an...
I have read (but not researched so don't have links) that BCSH, UKNEQAS and NICE guidelines recommend:
"In the presence of discordance between test results and strong clinical features of deficiency, treatment should not be delayed to avoid neurological impairment."
And an extract from the book, "Could it be B12?" by Sally M. Pacholok:
"We believe that the 'normal' serum B12 threshold needs to be raised from 200 pg/ml to at least 450 pg/ml because deficiencies begin to appear in the cerebrospinal fluid below 550".
"For brain and nervous system health and prevention of disease in older adults, serum B12 levels should be maintained near or above 1000 pg/ml."
Folate is OK
Ferritin at 49 is too low. For thyroid hormone to work (that's our own as well as replacement hormone) ferritin needs to be at least 70, preferably half way through range. You can help raise your level by eating liver regularly, maximum 200g per week due to it's high Vit A content, and including lots of iron rich foods in your diet apjcn.nhri.org.tw/server/in...
Vit D at 69.6 is too low. The Vit D Council recommends a level between 100-150nmol/L
Your thyroid results show that you are just over the ratio where good conversion takes place. FT4 at 18.2 and FT3 at 4.5 gives a ratio of 4.04 :1 Good conversion takes place at 4:1 or less, some say 3:1. As your FT4 is slightly over range and your FT3 only 31% through it's range, the addition of T3 would be a good idea. However, you need to optimise all your vitamin and mineral levels first for thyroid hormone to work properly and good conversion to take place.