Fasting for blood work typically involves avoiding food and drink (except water) for eight to twelve hours to ensure accurate results, particularly for tests like glucose, cholesterol, and triglycerides. It is important Fasting Before Blood Tests: When It's Required and Why A study shows that the antioxidant glutathione feeds cancer cells Which blood tests can be done without fasting? HealthcareOnTime Glutathione Benefits: Top Uses for Your Health Nutrisense Journal Fasting Blood Test: How Many Hours Are Required? Centers Urgent Care