BPC-157, TB-500 and GHK-Cu: reading a CoA critically
A percentage on a product page is useful only when you know what was measured. A certificate of analysis, or CoA, connects the sample, method and reported result.
1. Start with the right batch
Check the product, batch code, report number and test date. Identify the issuing laboratory and locate the original report where possible. Janoshik offers report verification on its website. Janoshik · 14-10-2026
2. Identity before interpretation
A 2012 analytical study described TB-500 as a thymosin fragment. An abbreviated product name is therefore insufficient to equate molecules. PubMed · 2012
3. Separate purity from quantity
Chromatographic purity and reported quantity answer different questions. One is not automatically convertible into the other. Read the units, method and notes. If one analysis is reported, do not assume that every other possible test was also performed.
4. Separate analysis from biological activity
The BPC-157 and GHK-Cu papers discussed in the overview involve cells or tissue. A chemical report does not replicate a biological experiment. It also does not automatically explain behavior in every future research model.
5. Make verification reproducible
Keep the original report with the batch code and verification date. Record missing information as missing. An unclear statement does not become reliable by adding your own interpretation. This leaves a record that a colleague can understand without having attended the original check.
Available reports are listed on the Buddha Peptides CoA page. Mentioning a laboratory here does not mean it tested every product batch. Always check the report for the specific batch.
