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If your doctor suspects you may have a B12 deficiency, they can do a lab test to check B12 levels in your blood: A normal serum B12 level is between 300 pg/mL and 900 pg/mL. Between 200 to 300 is ...
A diagnosis of vitamin B 12 deficiency is determined by blood levels lower than 200 or 250 picograms per ml (148 or 185 picomoles per liter). [3] Some people can have symptoms with their normal levels of the vitamin, or may have low levels despite having no symptoms. [5] Other tests may be done to ensure individuals status. [3]
A vitamin B12 level of less than 200 pg/mL is considered deficient. Treatment First, have your health care provider run blood tests to see if you truly have a B12 deficiency.
A blood test can be performed to quantify total homocysteine concentration in the plasma, of which approximately 80% is generally protein-bound. Classification of hyperhomocysteinemia is defined with respect to serum concentration as follows: [citation needed] Moderate: 15–30 nmol/mL (or μmol/L) Intermediate: 30–100 nmol/mL; Severe: > 100 ...
Blood tests may show low levels of vitamin B 12, elevated levels of methylmalonic acid or homocysteine, and a routine complete blood counts may shows anemia with an elevated mean cell volume. [140] The presence of antibodies to gastric parietal cells and intrinsic factor may indicate pernicious anemia .
Registered dietitians explain what vitamin B12 is, how much you need, and the potential side effects of taking too much. Skip to main content. 24/7 Help. For premium support please call: ...
For this reason, elevated serum homocysteine over 15 micromol/L and methylmalonic acid (MMA) over 0.271 micromol/L are considered better indicators of B 12 deficiency, rather than relying only on the concentration of B 12 in blood. [2] However, elevated MMA is not conclusive, as it is seen in people with B 12 deficiency, but also in elderly ...
An expert reveals why you shouldn't ignore symptoms of a B12 deficiency and what you can do to treat it. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: ...