Diagnostic Diabetes Blood Test (HbA1c)

Measure an average blood sugar levels over two to three months.

Results in 24 hours


What is this test?

The HbA1c blood test (glycated haemoglobin) is a diagnostic blood test used to measure a person's average blood sugar levels over two to three months. Regular HbA1c testing is crucial for individuals with diabetes to help maintain optimal blood sugar control and minimise the risk of long-term complications. It could also be a diagnostic marker to check whether you may have diabetes.

It is important to note that diabetes can have no symptoms. Risk factors include lifestyle and family history, amongst other factors.

Common Symptoms

Common Symptoms

  • Frequent Urination
  • Excessive Thirst
  • Unexplained Weight Loss
  • Increased Hunger
  • Fatigue and Weakness
  • Blurred Vision
  • Slow Wound Healing
  • Tingling or Numbness of Extremities
  • Recurring Infections
  • Dry Mouth and Skin
  • Irritability and Mood Changes
  • Erectile Dysfunction

How long does it take?

The test turnaround is 24 hours.

Type of sample

Blood sample

What is included in this test

Diabetes Biomarkers

HbA1c (Hemoglobin A1c) and Glucose are fundamental indicators for monitoring blood sugar regulation. These markers provide insights into an individual's long-term and short-term glucose levels aiding in the diagnosis and management of diabetes.

HbA1c Glucose

The benefits of this blood test

  • Check whether you may have diabetes
  • Monitor diabetes control
  • Treatment, health insights and support
  • Guidance to manage the symptoms
  • Lifestyle advice

Diabetes Diagnosis

If you are showing symptoms of diabetes, such as increased thirst, frequent urination, unexplained weight loss, or extreme fatigue, an HbA1c blood test can help confirm a diagnosis. Elevated levels of HbA1c indicate high average blood sugar levels over the past two to three months, which may indicate diabetes.

Prediabetes Evaluation

An HbA1c test can evaluate individuals at risk of developing diabetes or those with prediabetes, a condition characterised by higher than normal blood sugar levels. It helps identify individuals who may benefit from lifestyle modifications and preventive measures to delay or prevent the onset of diabetes.

Monitoring Blood Sugar Control

For individuals already diagnosed with diabetes, regular HbA1c tests are essential to monitor blood sugar control over time. These tests provide an average of blood sugar levels over the past two to three months, giving insight into the effectiveness of diabetes management strategies, including medication, diet, and lifestyle changes.

Treatment Adjustment

HbA1c test is valuable in guiding treatment decisions. If blood sugar levels are consistently high or fluctuating, an elevated HbA1c level may prompt healthcare providers to adjust diabetes medications and insulin dosage or recommend changes to diet and exercise routines to improve blood sugar control.

Monitoring Complications

High HbA1c levels indicate poor long-term blood sugar control, which increases the risk of developing complications associated with diabetes. Regular monitoring of HbA1c levels helps assess the risk of complications such as heart disease, kidney damage, nerve damage, and eye problems. It guides healthcare providers in implementing appropriate preventive measures and treatment strategies.

People, happy in a circle

Take the Next Step in Proactive Healthcare

Book your Diabetes Blood Test at UniClinic today

Enquire today

Contact us

Get in touch

We are here to answer your questions. Call us to book an appointment or to get advice.

020 3002 7795

Email us

Email us your enquiries, feedback or suggestions, and we will get back to you as soon as possible.


Live chat with us

If you prefer to talk with one of our assistants via text chat, we offer live chat service too.

Chat now

In a health emergencies

Need someone to talk to?

Call Samaritans on 116 123 for confidential support.

Are you in a mental health crisis?

Call 111 for urgent help and support.

In a life-threatening emergency?

Call 999 or go to A&E immediately.