I've been seeing COAs posted but honestly didn't know what to look for. Spent some time researching. Key things: purity percentage (should be 98%+), method used (HPLC is standard), peptide content vs fillers, and whether it's third-party or in-house. Anything I'm missing? What red flags should I watch for?
How to read a COA — beginner's guide
For the fatigue — my doctor checked my B12 and it was low. Started supplementing and the fatigue improved dramatically. Worth getting your levels checked.
What lab did you use for testing? I've been meaning to test my supply but not sure where to send it.
Did you get a COA with your order? I've been looking at this vendor but want to verify quality first. How long did shipping take?
Following because I'm in the same boat. Week 16, 10mg, and the plateau is real. I'm trying to be patient but it's frustrating.
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