Is 99% Purity the Same as 99% Peptide?

No.

And this may be the most abused percentage in the entire peptide industry.

When a report says 99% purity, most people naturally assume that means 99% of everything inside the vial is the peptide named on the label.

That is not necessarily what the test is saying.

Purity testing looks at the material detected during that specific analysis and asks how much of it appears to be the main target compound compared with other detected compounds.

That is useful.

But it is not the same as confirming how many milligrams are actually in the vial.

A sample can test extremely well for purity and still contain less total peptide than the label claims.

Those are two different questions:

How clean is the peptide that was detected?

And:

How much peptide is actually there?

One is purity.

The other is quantity.

Companies love talking about the first one because 99-point-something looks incredible in giant letters.

The second one requires checking whether a vial labeled 10 mg actually contains approximately 10 mg.

That number may be less glamorous.

It may also be the one you really wanted to know.

So when you see “99% pure,” do not assume it answers every question about the vial.

It answers one.

And there is a pretty important one standing right behind it.

All products are sold strictly for laboratory research purposes and are not intended for human consumption.