Fructosamine levels reflect the average blood glucose over approximately how many days?

Fructosamine levels reflect the average blood glucose over approximately how many days?

• A. 1-2 days
• B. 1-2 weeks
• C. 1-2 months
• D. 6-8 weeks

Answer: (B)

Fructosamine measures the amount of glucose that has become bound to circulating proteins, mainly albumin. Since these proteins have a relatively short turnover time—roughly one to two weeks—the fructosamine level reflects average blood glucose over that same period. That’s why the test is said to represent glycemic control over about 1–2 weeks. It won’t capture very day-to-day fluctuations (too short a window) or long-term trends over months (that would involve other measures). If albumin levels are abnormal, it can skew the result because fructosamine depends on the available protein to bind glucose.

Fructosamine measures the amount of glucose that has become bound to circulating proteins, mainly albumin. Since these proteins have a relatively short turnover time—roughly one to two weeks—the fructosamine level reflects average blood glucose over that same period. That’s why the test is said to represent glycemic control over about 1–2 weeks. It won’t capture very day-to-day fluctuations (too short a window) or long-term trends over months (that would involve other measures). If albumin levels are abnormal, it can skew the result because fructosamine depends on the available protein to bind glucose.