Vitamin B12
Preparation:
Avoid taking vitamin B12 supplements or multivitamins for 24–48 hours before the test (unless otherwise advised by your doctor).
Let your provider know about any medications you’re taking, especially metformin, proton pump inhibitors, or antacids.
Fasting Required:
Yes, fasting is recommended — at least 6–8 hours before the test to ensure accurate results.
Best Time for Testing:
Morning, after fasting overnight, is ideal.
This test helps evaluate vitamin B12 levels, essential for nerve function, red blood cell production, and DNA synthesis.
Preparation:
Avoid taking vitamin B12 supplements or multivitamins for 24–48 hours before the test (unless otherwise advised by your doctor).
Let your provider know about any medications you’re taking, especially metformin, proton pump inhibitors, or antacids.
Fasting Required:
Yes, fasting is recommended — at least 6–8 hours before the test to ensure accurate results.
Best Time for Testing:
Morning, after fasting overnight, is ideal.
This test helps evaluate vitamin B12 levels, essential for nerve function, red blood cell production, and DNA synthesis.