Why this distinction matters

Most people comparing colostrum products focus on one number:

IgG percentage

But that’s not the full picture.

The way colostrum is processed, whole vs skim or fractionated, can significantly change its composition.

What is whole colostrum?

Whole colostrum is:

• Unfractionated
• Minimally processed
• Preserves natural fats and lipids

This matters because those fats help:

• Deliver nutrients
• Support absorption
• Maintain the integrity of bioactive compounds

What is skim or fractionated colostrum?

These products:

• Remove fat or components
• Alter natural ratios
• Sometimes increase isolated IgG levels

In some cases, manufacturers:

• Add milk powder fillers
• Inflate IgG numbers artificially

The IgG misconception

It’s easy to assume:

Higher IgG = better product

But that’s not always true.

Whole colostrum naturally contains:

• ~20% IgG (balanced profile)

Some products claim:

• 30–40% IgG

This often comes from:

• Altered composition
• Added fillers

Which may reduce:

• IgG-1 proportion
• Overall balance

Why fats and lipids matter

Whole colostrum contains:

• Phospholipids
• Milk fat globule membrane
• Liposomal structures

These help:

• Protect nutrients through digestion
• Improve absorption

Removing them changes how the product functions.

What to look for

If you’re choosing a product, check for:

• First-milking sourcing
• Whole (unfractionated) labeling
• No milk powder fillers

These are better indicators than just IgG percentage.

The Udder Truth

Whole colostrum preserves what makes colostrum unique:

• Balance
• Bioactivity
• Absorption

Focusing only on isolated metrics like IgG can be misleading.