What to Eat the Night Before a Cholesterol Test: Expert Advice for Accurate Results
Published on September 2, 2024
Key Takeaway
To ensure accurate cholesterol test results, it's best to fast for 9-12 hours before the test, avoiding all food and drinks except water.
Introduction
If you're scheduled for a cholesterol test, you might be wondering what you should eat—or avoid eating—the night before. The truth is, what you consume in the hours leading up to your test can significantly impact your results. In this article, we'll explore expert recommendations on how to prepare for your cholesterol test to ensure the most accurate readings.
The Importance of Fasting Before a Cholesterol Test
Traditionally, healthcare providers have recommended fasting before a cholesterol test. According to the Mayo Clinic, you're generally required to fast for 9 to 12 hours before the test, consuming only water during this period. The reason for this is that what you eat can affect your lipid levels, particularly your triglycerides.

What to Avoid the Night Before Your Test
To ensure accurate results, it's best to avoid the following in the hours leading up to your cholesterol test:
- All food and drinks (except water)
- Alcohol (for at least 24 hours before the test)
- Certain medications (consult with your doctor about which ones)
Healthline reports that alcohol consumption within 24 hours of the test can affect your triglyceride levels, potentially skewing your results.
The Last Meal Before Fasting
While the focus is often on what not to eat, it's also worth considering what your last meal should be before beginning your fast. Ideally, this meal should be balanced and not excessively high in fat or sugar. A study published in PubMed suggests that a meal high in protein might help stabilize blood sugar levels, which could be beneficial before fasting.
The Impact of Meal Timing on Cholesterol Levels
Interestingly, the timing of your meals can affect your cholesterol levels. Research has shown that eating certain foods at specific times of day can influence biomarkers of cardiometabolic risk. For instance, consuming vegetables at breakfast was associated with lower LDL-cholesterol, while fruit intake at breakfast was linked to lower glycated hemoglobin levels.

Non-Fasting Cholesterol Tests: A New Trend?
While fasting has been the standard preparation for cholesterol tests, some recent guidelines suggest that non-fasting tests can be accurate for many people. According to Healthline, new guidelines published in the Journal of the American College of Cardiology state that people who aren't taking statins may not need to fast before having their blood tested for cholesterol levels. However, it's crucial to follow your doctor's specific instructions, as they may still recommend fasting based on your individual health situation.
What If You Can't Fast?
If you're unable to fast for medical reasons, or if you accidentally eat or drink something other than water, it's important to inform your healthcare provider. They can interpret your results with this information in mind or may choose to reschedule your test.
Conclusion
Preparing for a cholesterol test primarily involves fasting for 9-12 hours before the test, avoiding all food and drinks except water. While the last meal before fasting should be balanced, the focus should be on adhering to the fasting period to ensure accurate results. Always follow your healthcare provider's specific instructions, as they may vary based on your individual health needs. By properly preparing for your cholesterol test, you're taking an important step in managing your cardiovascular health.