Which statement best describes fructosamine?

Which statement best describes fructosamine?

• A. A lipid
• B. A nucleic acid
• C. A protein to which glucose binds
• D. A carbohydrate

Answer: (C)

Fructosamine is a protein–sugar conjugate formed when glucose binds nonenzymatically to amino groups on proteins, most commonly albumin. This creates a glycated protein, not a free carbohydrate, lipid, or nucleic acid. The term reflects the Amadori product that results after the initial bond forms. Clinically, the fructosamine test measures how much glycated serum protein is present, giving an indication of average blood glucose over roughly the past two to three weeks. That's why the correct description is a protein to which glucose binds. Lipids are fats, nucleic acids are DNA or RNA, and while fructosamine involves a sugar, it is not itself a carbohydrate.

Fructosamine is a protein–sugar conjugate formed when glucose binds nonenzymatically to amino groups on proteins, most commonly albumin. This creates a glycated protein, not a free carbohydrate, lipid, or nucleic acid. The term reflects the Amadori product that results after the initial bond forms. Clinically, the fructosamine test measures how much glycated serum protein is present, giving an indication of average blood glucose over roughly the past two to three weeks. That's why the correct description is a protein to which glucose binds. Lipids are fats, nucleic acids are DNA or RNA, and while fructosamine involves a sugar, it is not itself a carbohydrate.