Precautions for Blood Test to Check Insulin

Testing insulin levels through blood draw is an important method for assessing islet function. The following points should be noted:

1. Fasting requirement: Typically, an 8-12 hour fast is required, as insulin levels can rise after eating and affect the accuracy of test results.

2. Dietary adjustment: During the week before the test, maintain a light diet and avoid spicy, fried, sweet, or pickled foods, as well as stimulants such as alcohol, carbonated beverages, and coffee.

3. Avoid strenuous exercise: Refrain from strenuous activity the day before testing, as physical activity can influence blood glucose and insulin levels.

4. Medication discontinuation: Inform your physician about any medications currently being taken for lowering blood sugar or lipids, and discontinue any drugs that may affect blood glucose or lipid levels according to medical advice.

5. Stay calm: Emotional stress or anxiety can also affect insulin levels, so try to stay relaxed.

6. Other considerations: Blood tests can be performed simultaneously with an oral glucose tolerance test. Avoid testing during menstruation and ensure the puncture site remains clean after blood collection to prevent infection.

Following these precautions can help ensure the accuracy and reliability of the test results.