Which type of formula is NOT typically administered via percutaneous endoscopic gastrostomy (PEG) feeding?

• A. Standard formulas
• B. Hydrolyzed formulas
• C. Disease-specific formulas
• D. Blenderized formulas

Answer: (D)

In PEG feeding, the formulas chosen are designed for reliable, standardized delivery through a tube, ensuring predictable energy, protein, micronutrients, and appropriate viscosity. Standard polymeric formulas provide intact nutrients suitable for most people with normal digestion. Hydrolyzed formulas deliver pre-digested proteins for easier absorption in those with digestive issues or malabsorption. Disease-specific formulas are tailored to particular conditions, adjusting macronutrient ratios and micronutrients to support specific medical needs.

Blenderized formulas come from whole foods blended to a puree. They introduce variability in nutrient content, osmolality, and texture, which makes it harder to guarantee precise nutrition. They also carry a higher risk of bacterial contamination if not prepared, stored, and handled with strict hygiene, and they can clog feeding tubes due to particulates. For these reasons, they are not considered the typical choice for PEG administration, whereas the other formula types are specifically designed for consistent tube feeding. In some homecare scenarios they may be used, but they are not the standard in most clinical PEG settings.