What Fasting Glucose tells you
Markers related to how the body manages blood sugar and insulin. They are commonly included in general health reviews and discussed with a clinician alongside other information.
Which Honed panels include Fasting Glucose
Fasting Glucose is measured in the Essential Panel and Performance Panel. Every sample is collected at a pathology collection centre and processed at a NATA-accredited laboratory against RCPA reference ranges, with personalised plain-English commentary in your secure online report.
Why Fasting Glucose matters
Fasting glucose is blood sugar measured after 8–10 hours without food, representing hepatic glucose production and baseline glucose control. It is one of the primary markers of metabolic health and is interpreted alongside insulin, HbA1c, and triglycerides as part of metabolic assessment. Glucose is tightly regulated by insulin and other hormones; fasting glucose reflects the body's ability to maintain stable blood sugar overnight and under a fasting state.
The range explained
Low levels
Low fasting glucose (below 3.5 mmol/L) may indicate hypoglycemia (clinically significant), excessive insulin sensitivity, or reactive hypoglycemia. Values below 3.0 mmol/L are concerning and warrant evaluation.
Normal range
Reference range: 3.5–5.5 mmol/L represents healthy fasting glucose and normal glucose regulation.
High levels
Elevated fasting glucose (above 5.5 mmol/L, up to 7 mmol/L is often considered impaired fasting glucose, and above 7 mmol/L warrants further investigation) may indicate insulin resistance or impaired glucose regulation.
What affects Fasting Glucose
- Training: Regular exercise (especially resistance training) improves insulin sensitivity and lowers fasting glucose. Conversely, sedentariness worsens glucose control.
- Nutrition: Refined carbohydrates and excess sugar elevate fasting glucose; whole grains, fibre, and protein support stable glucose. Timing of carbohydrate intake affects glucose control.
- Sleep: Sleep deprivation impairs insulin sensitivity and elevates fasting glucose. Consistent sleep improves glucose regulation.
- Stress: Chronic stress elevates cortisol, which increases hepatic glucose production and fasting glucose. Stress management improves glucose control.
When to retest
Every 12 weeks for those optimizing glucose control; every 12 months for general health.
Why athletes care
Athletes monitor fasting glucose as part of metabolic health; elevated glucose alongside elevated insulin suggests insulin resistance, which impairs recovery and fat loss.
Related metabolic markers
FAQ
What does the Fasting Glucose blood test measure?
Blood sugar measured after fasting. It is a routine marker clinicians use when reviewing how the body manages blood sugar.
Which Honed Health panels include Fasting Glucose?
Fasting Glucose is included in the Essential and Performance panels.
What unit is Fasting Glucose measured in?
Fasting Glucose is reported in mmol/L, measured at NATA-accredited laboratories against RCPA reference ranges, with personalised plain-English commentary in your secure report.