Vitamin B12 Test ​This Vitamin B12 (Cyanocobalamin) test measures the amount of B12 in your blood. Vitamin B12 is a vital nutrient that is essential for nerve tissue health, brain function, and the production of red blood cells. Since the body cannot produce it, we must obtain it through diet or supplements. Low levels can lead to severe fatigue and neurological issues. ​Why should you take this test? ​To detect Vitamin B12 deficiency which can cause anemia and confusion. ​To monitor the effectiveness of B12 treatment or supplements. ​If you experience symptoms like tingling in hands/feet, memory loss, or extreme weakness. ​Highly recommended for vegetarians and vegans, as B12 is primarily found in animal products. ​Test Specifications: ​Sample Type: Blood (Serum) ​Preparation: Fasting for 8-12 hours is usually recommended for more accurate results. ​Reporting: High-precision results delivered within 24 hours.