The Vitamin B12 Test is a blood test that measures the levels of vitamin B12, an essential nutrient for red blood cell production, brain function, and nerve health. A deficiency in vitamin B12 can lead to anemia, fatigue, memory issues, and nerve damage. This test is often recommended for individuals experiencing symptoms like weakness, tingling sensations, mood changes, or difficulty... https://redcliffelabs.com/vitamin-b12-test