Insulin Resistance
Private Insulin Resistance test in London for £129, checking five metabolic markers including fasting insulin and glucose with results in around 1 day.
Turnaround time
1 business day
Biomarkers count
5
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Overview of the Insulin Resistance
he Insulin Resistance profile is a five-marker metabolic blood test designed to assess Insulin production, blood Glucose regulation and evidence of reduced Insulin sensitivity.
The test contains 5 biomarkers: C-Peptide, Glucose, HbA1c, Insulin and Insulin Resistance (Fasting).
Insulin is produced by pancreatic beta cells and allows Glucose to move from the bloodstream into cells where it can be used or stored.
Insulin resistance develops when tissues become less responsive to normal Insulin signalling.
The pancreas may initially compensate by producing more Insulin, meaning fasting or post-meal Insulin can become elevated even while Glucose remains within its expected range.
Over time, if pancreatic compensation becomes insufficient, fasting Glucose and HbA1c can begin to rise.
This is why looking at Insulin together with Glucose can provide additional metabolic information beyond HbA1c alone.
The profile includes a fasting Insulin Resistance measurement, commonly assessed using a calculated index based on fasting Insulin and fasting Glucose.
HOMA-IR is one such widely used estimate of Insulin resistance.
It is useful for metabolic assessment but should not be presented as an absolute diagnostic gold standard.
C-Peptide provides information about the body's own Insulin production because it is released when endogenous Insulin is produced.
HbA1c provides a different time perspective, reflecting average Glucose exposure over approximately the previous 8–12 weeks.
Together, the five markers provide a more detailed picture of glucose and Insulin physiology than a single fasting Glucose result.
What Does the Insulin Resistance Test Check?
The profile combines fasting metabolic measurements with longer-term Glucose information and endogenous Insulin-production assessment. This test measures 5 biomarkers.
C-Peptide
Measures a substance released alongside endogenous Insulin and provides information about the body's own pancreatic Insulin production.
Glucose
Measures the amount of Glucose circulating in the blood at the time of collection.
HbA1c
Reflects average Glucose exposure over approximately the previous 8–12 weeks.
Insulin
Measures circulating Insulin and is particularly useful when collected fasting alongside Glucose.
Insulin Resistance (Fasting)
Provides an estimate of fasting Insulin resistance using the relationship between fasting Insulin and Glucose according to the laboratory's calculation method.
Who May Benefit From the Insulin Resistance Test?
This profile may be useful when early metabolic dysfunction is suspected even before Glucose or HbA1c reaches the diabetic range.
People with a family history of type 2 diabetes - Genetic and lifestyle factors can increase the likelihood of Insulin resistance.
People with central or abdominal weight gain - Visceral adiposity is strongly associated with reduced Insulin sensitivity.
People with polycystic ovary syndrome - Insulin resistance is common in PCOS, although it is not required for diagnosis.
People with high Triglycerides or other features of metabolic syndrome - These abnormalities frequently cluster with Insulin resistance.
People with previous borderline Glucose or HbA1c results - More detailed Insulin assessment can provide additional context.
People with fatty liver or metabolic liver disease - Insulin resistance is closely linked with metabolic liver disease.
People with high blood pressure and metabolic risk factors - Cardiometabolic abnormalities often occur together.
People wanting a more detailed metabolic assessment than HbA1c alone - Fasting Insulin and C-Peptide provide additional physiological information.
How to Prepare
Do not consume coffee with sugar, milk, juice, food or caloric supplements during the fasting period.
The fasting calculation becomes much less meaningful if Insulin and Glucose are measured after eating.
Symptoms and Reasons to Consider the Insulin Resistance Test
Early Insulin resistance frequently causes no obvious symptoms, which means risk factors and blood results are often more useful than symptom-based assessment.
Central weight gain with metabolic risk factors - Abdominal adiposity commonly accompanies Insulin resistance.
Difficulty losing weight despite structured lifestyle changes - Insulin resistance may be one factor, although weight regulation is multifactorial.
Post-meal tiredness - This symptom is non-specific but can prompt broader metabolic assessment.
Persistent sugar cravings or appetite changes - These do not diagnose Insulin resistance but may occur alongside metabolic dysfunction.
Irregular menstrual cycles in someone with suspected PCOS - Insulin resistance can form part of the metabolic picture.
A previous raised fasting Glucose - Additional Insulin information can help assess metabolic regulation.
A previous borderline HbA1c result - Fasting Insulin and Glucose provide complementary information.
A family history of diabetes despite currently normal Glucose - Earlier metabolic changes can sometimes be identified before overt hyperglycaemia develops.
Insulin resistance cannot be diagnosed reliably from symptoms such as tiredness, cravings or difficulty losing weight alone.
Marked thirst, frequent urination, unexplained weight loss or very high Glucose requires appropriate diabetes assessment.
How to Book Your Insulin Resistance Test
The Insulin Resistance profile can be booked privately for a more detailed assessment of metabolic health than Glucose or HbA1c alone.
Choose the Insulin Resistance
Select the five-marker metabolic profile online.
Select your sample collection option
Choose an in-clinic blood draw or professional home or hotel phlebotomy.
Attend your appointment
Attend after the recommended overnight fast so that fasting Glucose and Insulin can be interpreted appropriately.
Laboratory analysis
C-Peptide, Glucose, HbA1c and Insulin are measured and the fasting Insulin Resistance value is generated.
Receive your results securely
Your authorised metabolic profile is delivered securely for interpretation.
When Will I Receive My Results?
The current expected turnaround for the Insulin Resistance profile is approximately 1 business day after your sample reaches the laboratory.
The included markers are routinely available metabolic and endocrine investigations.
The fasting Insulin Resistance calculation can be generated once the required fasting Insulin and Glucose results are available.
The report undergoes laboratory quality control and authorisation before release.
Turnaround begins from laboratory receipt rather than necessarily from the exact time of your blood draw.
Understanding Your Results
Insulin Resistance results should be interpreted as a pattern rather than focusing on one marker.
A raised fasting Insulin concentration with relatively normal fasting Glucose can indicate that the pancreas is producing additional Insulin to maintain Glucose control.
A higher fasting Insulin Resistance calculation can support reduced Insulin sensitivity.
However, the exact cut-off varies according to laboratory methodology and population, and HOMA-IR or similar calculations are estimates rather than definitive standalone diagnoses.
HbA1c shows whether average Glucose exposure has already started to increase over a longer period.
C-Peptide provides information about endogenous pancreatic Insulin production.
A person can therefore have evidence of hyperinsulinaemia or reduced Insulin sensitivity while HbA1c remains within the laboratory reference range.
Results should be interpreted alongside weight, waist circumference, blood pressure, lipid profile, liver health, family history and medication.
Why Book With London Blood Tests?
This profile looks beyond Glucose alone and assesses the physiological Insulin response responsible for maintaining blood-sugar control.
Five complementary metabolic markers - Insulin, Glucose, HbA1c, C-Peptide and fasting Insulin Resistance are included.
Assesses Insulin directly - Can identify hyperinsulinaemia before overt diabetes develops in some people.
Fasting Insulin Resistance calculation included - Provides an estimate of reduced Insulin sensitivity.
HbA1c included - Adds longer-term Glucose information.
C-Peptide included - Provides additional information about endogenous Insulin production.
Relevant to PCOS and metabolic syndrome - Provides useful metabolic context.
Fast results - Current expected turnaround is approximately 1 business day.
Private testing in London - Clinic and mobile phlebotomy options are available.
Clear pricing - The Insulin Resistance test costs £129.
Private Insulin Resistance Blood Test in London
London Blood Tests provides private Insulin Resistance testing in London for people seeking a detailed assessment of fasting Insulin and Glucose metabolism.
The profile costs £129 and measures 5 biomarkers.
Results are expected approximately 1 business day after laboratory receipt.
An overnight fast is important because the fasting Insulin Resistance calculation depends on fasting Insulin and Glucose values.