What 99% purity on a peptide COA does and does not tell you
HPLC purity tells you how much of a sample is one compound. It does not tell you which compound, or how much is in the vial.
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The language of life, one sequence at a time
Peptide research notes from Senna Research: mechanisms, published studies, analytical testing and handling, for laboratory research use only.
BPC-157 and TB-500 research notes: origins, mechanisms and evidence
BPC-157 and TB-500 are often discussed as a pair. Their sequences, mechanisms and research histories are different, and the evidence behind each is thinner than the discussion suggests.
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Angiogenesis in tissue repair: why the proliferation phase stalls
Repaired tissue tops out at about 80% of its original strength, and the usual bottleneck is the arrival of new blood vessels during the proliferation phase.
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Cartilage collagen half-life and why joint repair research is slow
Collagen in adult knee cartilage turns over so slowly that one study put its half-life at about 117 years. That number explains why cartilage repair research moves slowly.
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GHK-Cu research: from a 1973 plasma finding to three repair pathways
GHK-Cu began with a 1973 observation about young plasma and aging liver cells. Fifty years on, it appears in three distinct repair pathways in the literature.
Read article →GHK-Cu collagen evidence: what the topical study actually showed
GHK-Cu is one of the few peptides with human data. The most-cited study is real, but it is small, topical and older than most summaries suggest.
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TB-500 and BPC-157 in rat Achilles tendon repair: a 2026 study
In a 2026 rat Achilles tendon study, TB-500 increased maximum load to failure versus controls. Combining it with BPC-157 added no benefit over either alone.
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GHK-Cu collagen research: from fibroblasts to wound models
Fibroblast studies, antioxidant work and animal wound models all point to the copper in GHK-Cu doing real work. Here is what each layer of the research shows.
Read article →Five peptide claims the research does not support
Five claims the peptide internet repeats, from GHK-Cu gene counts to fridge storage, and what the research actually says about each.
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Kisspeptin, KNDy neurons and the first non-hormonal hot-flash drug
The first non-hormonal hot-flash drug came out of kisspeptin research, but it is not kisspeptin. That one detail explains most of what gets claimed online.
Read article →BPC-157 tendon research: blood supply, fibroblasts and the gaps
Tendons receive far less blood than muscle, which is why they repair slowly. Here is what the BPC-157 tendon studies measured, and what they leave open.
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Growth hormone decline after 35: CJC-1295 and Ipamorelin research
Growth hormone release declines on a measurable schedule through adulthood. Two peptides studied together, CJC-1295 and Ipamorelin, act on separate receptors that drive it.
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