Most supplier questionnaires are too long. Read the site first, ask only what it leaves open, and learn to tell a specific answer from a reassuring one.
A bundle changes how you buy, not what a report covers. Here is how to match batch numbers and documents to each pen, whether you order a bundle, a blend or single peptides.
Search results for GLOW use one name for things that may differ. Write a one-line spec, sort listings into three piles and end up with a short, explained list.
A request for "the COA" often gets an answer that leaves the real question open. How to frame a TB-500 analysis request so the reply is useful first time.
A BPC-157 TB-500 blend is one product listing both peptides. Here is what the listing tells you, what paperwork can add, and what neither one can settle.