Fasting Insulin – Insulin Resistance

Fasting Insulin - Insulin Resistance

Fasting Insulin – Insulin Resistance

Fasting Insulin - Insulin Resistance 

€60.00 

Even with a normal glucose level in the blood, insulin resistance can be a precursor to diabetes, cardiovascular disease and metabolic syndrome. Insulin resistance happens when your body needs to make more and more insulin to meet the demands of your sugar levels.

Who can benefit from this test?

Your nutritionist may recommend this test if you have:

  • Obesity, abdominal obesity, weight gain or weight loss resistance
  • Family/personal history of diabetes or pre-diabetes
  • High blood pressure, family/personal history of heart disease or stroke
  • Chronic fatigue or energy and metabolism issues
  • Concerns about healthy ageing and disease prevention

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Fasting Insulin – Insulin Resistance
 

Learn More about our Fasting Insulin - Insulin Resistance Test

At-home Dried Blood Spot

Measuring insulin is much more informative than a regular blood glucose test. Insulin resistance is when the signals to our cells to take up sugar out of the blood becomes disrupted. The body has to produce more and more insulin in order to manage the blood glucose level. Therefore, the blood glucose level may stay normal, but the insulin level is increasing. This will eventually lead to metabolic conditions, diabetes, and is linked with inflammation. But if caught early, this responds very well to nutritional intervention.

This test measures:

  • Fasting insulin

Works well with:

  • Heart Health Profile
  • Continuous Glucose Monitor

Keith was overweight and had diabetes in his family. He had a high stress job and was eating on the run. Keith carried out the blood sugar & insulin resistance profile to try to reduce his risk of diabetes.

His fasting glucose was normal and his HbA1c was borderline for the pre-diabetic range. His fasting insulin was above optimal and indicating early signs of insulin resistance.

Keith started on a healthy eating plan, tailored to suit his busy lifestyle and some supportive supplements. He also used a continuous glucose monitor for 2 weeks to see how his diet was affecting his sugar levels on a daily basis. After 3 months, Keith repeated his tests and his HbA1c had decreased and markers of insulin resistance had improved. He maintained his new healthy lifestyle and was losing weight and feeling better.

Fasting Insulin - Insulin Resistance FAQ

How can this test help me feel better?
Fasting insulin is one of the earliest markers of metabolic imbalance. Long before blood glucose becomes abnormal, insulin levels can rise as the body works harder to maintain normal blood sugar. Elevated fasting insulin (hyperinsulinaemia) is associated with: • Fatigue and energy crashes • Sugar cravings • Difficulty losing weight • Increased inflammation • Hormonal disruption (including PMOS/ formerly PCOS and fertility challenges) Identifying elevated insulin early allows for targeted dietary, lifestyle, and metabolic strategies to improve insulin sensitivity — often helping stabilise energy, mood, appetite regulation, and long-term heart health. In short, this test can highlight metabolic stress before it shows up on standard glucose testing.
I’ve already done fasting glucose with my GP, how is this different?
Fasting glucose measures the amount of sugar in your blood at a single time point. Fasting insulin measures how hard your body is working to keep that glucose in range. You can have completely “normal” glucose levels while your insulin is elevated — meaning your body is compensating. Over time, this compensatory state may progress to insulin resistance if not addressed. Fasting insulin therefore provides earlier insight into metabolic dysfunction than glucose alone.
Can I use the HOMA-IR formula with this result
Yes. If you have both fasting glucose and fasting insulin results, you can calculate HOMA-IR (Homeostatic Model Assessment of Insulin Resistance). HOMA-IR helps estimate insulin resistance by combining both values. It can provide a more meaningful interpretation than looking at insulin alone. We can calculate and interpret this for you within the context of your broader clinical picture and then design a nutrition and supplement plan around it.
I actually feel great and am at a healthy weight, can this test still help me?
Yes. Insulin resistance can develop even in individuals who are lean, physically active, and feel well. Early insulin elevations can occur due to stress, sleep disruption, genetics, diet composition, or hormonal shifts — long before symptoms appear. Testing can therefore be valuable from a preventative and longevity perspective, particularly if you have a family history of type 2 diabetes, cardiovascular disease, or metabolic syndrome.
Can I add anything else onto this test?
Yes. Fasting insulin is often most informative when interpreted alongside other metabolic and cardiovascular markers. Many patients choose to add an Advanced Heart Profile, which can provide deeper insight into cardiovascular risk, lipid particle characteristics, inflammatory markers, and overall cardiometabolic health. Combining these tests allows for a more comprehensive view of metabolic resilience, cardiovascular risk, and long-term prevention strategy.