Triglycerides require fasting for how long to ensure accurate measurement?

• A. 8-12 hours
• B. 12-14 hours
• C. 16-18 hours
• D. 24 hours

Answer: (B)

Triglycerides are highly influenced by recent fat intake because dietary fat appears in the blood as chylomicrons after a meal, raising triglyceride levels. To measure a true fasting level, you need a period long enough for these postprandial particles to clear so the result reflects basal hepatic triglyceride metabolism rather than recent eating. About 12 hours is sufficient for most people to minimize postprandial lipemia, and extending this to 12-14 hours provides a practical standard that helps reduce variability. Shorter fasting (8-12 hours) can still leave residual postprandial triglycerides in some individuals, while much longer fasting (16-18 or 24 hours) isn’t necessary and isn’t routinely recommended.