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Official Recommendation: Fasting NOT required for serum B12 testing Most labs do not require fasting Guidelines do not mandate fasting However, Some Experts Suggest: Overnight fast preferred for consistency Avoid B12 supplements for 24-48 hours before the test Avoid excessive B12-rich foods the day before the test Why the Controversy

Other information Content details Last updated on 17 Jul 2026 | 01:03 AM (IST) Manufacturer details Name: A)BACFO Pharmaceuticals (India) Limited Address: A)C 46, Phase 2, Dadri Main Rd, Noida, Uttar Pradesh - 201305, India Marketer details Name: Bright Lifecare Pvt

These may include: Sterile syringes Alcohol prep wipes Bacteriostatic water (BAC water) This added value improves convenience and reduces the need to source preparation materials separately

Delivery method determines outcome

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