What is the typical hang time range for closed enteral feeding systems?

• A. 24-48 hours
• B. 8-12 hours
• C. 2-4 hours
• D. 72 hours

Answer: (A)

Hang time is the time window after a feeding is started during which the prepared formula can be used safely before it must be discarded due to risk of contamination. In closed enteral feeding systems, the formula remains in a sealed, sterile setup, which lowers the chance of microbial ingress compared with open systems. That reduced exposure allows a longer safe window for use, typically about 24 to 48 hours at room temperature, depending on the product and facility policy. Shorter times like 2–4 hours or 8–12 hours are more common for open or less-protected systems, while 72 hours is generally beyond safe practice for most setups. Always follow the product labeling and institutional guidelines, since some systems may have specific limits or storage conditions.