Vitamin B12

About This Test
Vitamin B12 keeps your nerves and brain working well and helps your body make healthy red blood cells. Low levels can cause tiredness, pins-and-needles, poor balance, and memory trouble. Levels can drop with low intake, stomach issues, or some medicines. This test is commonly included in routine check-ups to detect problems early.

Patient Preparation
No fasting needed

Best Time to Test
Anytime

Tests Included
Vitamin B12

Why is it done
When you have tiredness, numbness/tingling, balance or memory problems, or anemia; to check if diet or supplements are working; after stomach or bowel surgery; for people at higher risk (older adults, vegans, those on metformin or acid-reducing meds).