Postoperative guidelines recommend monitoring B12 how often?

• A. Annually
• B. Every 5 years
• C. Monthly
• D. Weekly

Answer: (A)

The key idea is how often to watch vitamin B12 after surgery that affects the stomach and its ability to help absorb B12. After such procedures, the risk of B12 deficiency rises because intrinsic factor and normal absorption are altered, and the body’s B12 stores can take years to run down. Because B12 stores stay in the liver for a long time, deficiencies develop slowly, so checking annually is a practical balance: it allows early detection before symptoms or damage occur, without subjecting patients to unnecessary frequent testing. Checking more often (monthly or weekly) isn’t needed since levels don’t typically change that quickly, and waiting five years could miss a developing deficiency. If a deficiency is found, treatment can be started promptly and monitoring can become more frequent as needed.