1,25-dihydroxyvitamin D (calcitriol)
This test measures 1,25-dihydroxyvitamin D, the biologically active form of vitamin D. It is used to investigate calcium imbalance, kidney disease and...
This test reflects average blood sugar levels over the previous 2–3 weeks. It is useful when HbA1c is unreliable or short-term monitoring is needed.
Turnaround time
1-2 days
Biomarkers count
1
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SelectedFructosamine Blood Test | London Blood Tests UK
Monitor short-term blood sugar control with our Fructosamine blood test from £68. UKAS-accredited testing, fast results, optional GP consultation.
The Fructosamine Blood Test measures glycated serum proteins to assess average blood glucose levels over the previous 2–3 weeks. Priced at £68, analysed in a UKAS-accredited laboratory, with results typically available within 2–3 business days and an optional GP consultation for interpretation.
Fructosamine is formed when glucose binds to serum proteins, primarily albumin, through a process called glycation. Because these proteins have a shorter lifespan than red blood cells, fructosamine reflects short-term glucose control, typically over the past 14–21 days.
Unlike HbA1c, which shows average glucose over 2–3 months, the Fructosamine Test is ideal for situations where rapid changes in blood sugar need to be assessed. It is especially useful for monitoring diabetes treatment adjustments, assessing glucose control during pregnancy, or evaluating glycaemic control in conditions where HbA1c may be unreliable.
The test provides clinicians with a timely snapshot of how well blood sugar has been controlled recently, making it a valuable tool in diabetes management and metabolic monitoring.
Reflects Short-Term Blood Sugar Control
Measures average glucose over 2–3 weeks, allowing faster assessment of treatment effectiveness than HbA1c.
Ideal for Monitoring Therapy Changes
Useful after starting or adjusting diabetes medications, insulin regimens, or lifestyle interventions.
Alternative When HbA1c Is Unreliable
Beneficial in conditions affecting red blood cell lifespan, such as anaemia, haemoglobinopathies, or recent blood loss.
Useful in Pregnancy
Provides short-term glucose monitoring in gestational diabetes where rapid changes are clinically important.
Detects Poor Glycaemic Control Early
Helps identify rising glucose levels before they are reflected in HbA1c results.
Simple Blood Test
Requires only a single blood sample with no prolonged preparation or multiple collections.
Optional GP Consultation for Interpretation
A GP can review results and advise on treatment adjustments or further testing if needed.
You may benefit from a fructosamine test if you:
Have diabetes and recently changed medication or insulin
Need short-term glucose monitoring
Are pregnant with known or suspected gestational diabetes
Have conditions that interfere with HbA1c accuracy
Are experiencing unexplained blood sugar fluctuations
Require closer monitoring during illness or stress
This test complements HbA1c and fasting glucose, providing a more responsive indicator of recent blood sugar control.
Book Your Appointment
Book online or by phone — no referral required.
Pre-Test Preparation
No fasting is required, unless combined with other fasting tests.
Blood Sample Collection
A trained phlebotomist collects a venous blood sample from your arm.
The procedure takes approximately 5–10 minutes.
Sample Handling
The sample is labelled and transported under controlled conditions to a UKAS-accredited laboratory.
Laboratory Analysis
Fructosamine is measured using a colorimetric or enzymatic assay.
Quality Control
Internal and external quality checks ensure analytical accuracy.
Results Delivery
Results are typically available within 2–3 business days via secure online access.
Optional GP Consultation
A GP can interpret results and recommend adjustments to diet, medication, or further testing.
Book a Home Visit
Choose a convenient time and UK-wide location.
Professional Phlebotomist Visit
A certified phlebotomist attends your home or hotel.
Blood Collection
A venous blood sample is collected safely and professionally.
Courier to Laboratory
The sample is transported the same day to the laboratory.
Analysis & Reporting
Fructosamine levels are analysed promptly.
Optional GP Review
Discuss your results with a GP if required.
Fructosamine levels are reported in micromoles per litre (µmol/L).
Normal: 200–285 µmol/L
Borderline: 286–320 µmol/L
High: > 320 µmol/L
Normal Fructosamine
Indicates good short-term blood glucose control.
Borderline Levels
May suggest early dysglycaemia or suboptimal glucose control.
High Fructosamine
Reflects persistently elevated blood glucose over the previous 2–3 weeks.
Results should be interpreted in conjunction with fasting glucose, HbA1c, and clinical context. Conditions such as low albumin levels can affect fructosamine interpretation.
Simple steps to get your results
Choose your test online and book in seconds. Select your preferred clinic location or home visit option.
Attend one of our UK or London clinics, arrange a home nurse visit, or use a finger-prick kit where available.
Your sample is analysed by accredited UK laboratories, with secure results delivered directly to you.
Take control of your health with London Blood Tests
WhatsApp UsFollow these guidelines for accurate results
Where possible, attend your blood test between 7am and 12pm. Please wait until any short-term illness or infection has fully resolved before testing. Avoid intense exercise for 24–48 hours beforehand, as this can affect certain markers.
Fasting is not always required, but some tests may recommend it. If fasting is advised, avoid food for 8–12 hours before your appointment and drink water only. Stay well hydrated, as this helps with sample collection and accuracy.
Continue prescribed medications unless advised otherwise by your clinician. Avoid vitamin, mineral, or biotin supplements for at least 24–48 hours before your test, as these can interfere with results. If you are unsure about any medication or supplement, please let us know before your appointment.
For hormone-related tests, timing within your menstrual cycle may be important. If relevant, follow any specific guidance provided on your test page.
If you have any questions or special circumstances, our team is happy to advise before your appointment.
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