Lab marker · Low

Low Fructosamine: what it means

A Fructosamine result below the normal range is considered low. Here is what a reduced Fructosamine can point to, and when it is worth discussing with a doctor.

Reference range: ~200–285 umol/L; reflects average glucose over the past 2–3 weeks — a shorter window than HbA1c, useful when HbA1c is unreliable

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What a low Fructosamine can mean

  • Lower average blood sugar — good control, or a fall after treatment.
  • Falsely low from low albumin — kidney disease (nephrotic syndrome), liver disease, or protein loss can lower fructosamine independently of glucose.

When to discuss with a doctor

Fructosamine is a second-line glucose test, not a routine one. It is worth using when HbA1c cannot be trusted — for example with a haemoglobin variant, after recent bleeding or a transfusion, or when red-cell turnover is abnormal — because it gives an average glucose without relying on red cells. It is also useful to judge the effect of a diabetes treatment change over a few weeks rather than waiting three months for HbA1c. Its result must be interpreted with albumin, since a low albumin can falsely lower it. Mediora.AI shows fructosamine alongside HbA1c and glucose so the glucose picture is read with the right test; the diabetes management decision belongs with your doctor.

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Mediora.AI is informational - interpretation, not a diagnosis. A single out-of-range value is common and often benign; always discuss decisions with your doctor.