In 30yo, not vegetarian, healthy diet. neurological symptoms. what do you believe b12 level should be ideally? when i lived in cyprus was told above 500 & i was treated iv felt improved. but in uk told i am fine as level 280 not low. thank you?

Normal values are 160 to 950 picograms per milliliter (pg/mL), or 118 to 701 picomoles per liter (pmol/L). Normal value ranges may vary slightly among different laboratories. Some labs use different measurements or may test different samples. Talk to your provider about what your specific test results mean.

All laboratory results need to be interpreted in the clinical context and the doctor who ordered the tests is usually in the best position to do that. Talk to the doctor who ordered the tests. Having said that, your level is within normal limits. Wish you good health!