What does this test include?
Insulin is measured at three planned time points to show how the response changes after fasting, food or a glucose challenge. This listing does not define the exact time points or stimulus.
Why might it be ordered?
- To assess an insulin response pattern when a clinician has chosen a three-sample protocol.
- To complement glucose measurements in selected metabolic investigations.
What sample is needed?
Three blood samples are required. Obtain the exact written times and whether glucose is measured with each sample before attending.
How should you prepare?
Follow the laboratory protocol for fasting, glucose drink or meal and activity. Do not change diabetes treatment unless the responsible clinician gives specific instructions.
How are the results reported?
Interpretation depends on the exact time points, stimulus and paired glucose values. The insulin curve alone does not provide a universal diagnosis of insulin resistance.
Sources and editorial status
This patient-facing text is an editorial draft. It should be approved by a laboratory physician before official publication.