Description

Vitamin B12 testing evaluates cobalamin levels vital for red blood cell production, nerve health and DNA synthesis. Low levels may cause weakness, numbness, anemia, or mood changes and are common among vegetarians, older adults and those with absorption issues. It helps identify nutritional deficiency, pernicious anemia or long-term medication effects. No fasting is required. Results assist doctors in recommending dietary improvement or supplementation through oral tablets or injections. B12 testing is often paired with folate or homocysteine evaluation for a complete nutritional profile.