This private blood test measures serum fructosamine (glycated serum proteins), which reflects your average blood glucose levels over the previous 2 to 3 weeks. The catalogue test price is £62.50 plus a £50 phlebotomy fee, with results in 1 day.
Fructosamine is particularly useful when recent treatment or dietary changes need a faster check than HbA1c, or when haemoglobin variants, anaemia or pregnancy make HbA1c less reliable.
Written by Mr Stephen Lingam. Reviewed by Dr Mohammad Bakhtiar (GMC 4694470) on 18/10/2026.
Fructosamine is preferred when red blood cell lifespan is altered (such as in haemolytic anaemia, recent blood loss, iron therapy or haemoglobinopathies) or to check glucose changes over 2 to 3 weeks.
No fasting is required. Like HbA1c, fructosamine reflects average glucose over weeks rather than a single meal.
Results are normally returned in 1 working day from our Harley Street laboratory.
Yes. Because albumin is the main serum protein measured, conditions that lower serum albumin can affect fructosamine interpretation.