Research peptide statistics

Evidence quality

Each compound is rated 1 to 5 for the quality of its published research (see methodology). 17 of 40 reach level 4 or 5.

• 1. Limited, preclinical or single-group5
• 2. Mostly animal and in vitro12
• 3. Early human trials6
• 4. Late-stage human trials6
• 5. Approved drug, phase 3 trials11

Regulatory status

By research area

• Metabolic10
• GH axis8
• Neuro & longevity5
• Melanocortin4
• Repair3
• Immune3
• Mitochondrial3
• Neuroendocrine3
• Skin & matrix1

Nordapep catalogue

Source: live Nordapep catalogue; refreshed hourly. Prices in GBP.

Ready-to-cite findings

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• Of 40 research peptides profiled by peptide.wiki, 17 (43%) have only preclinical or limited published evidence (level 1-2 of 5).

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• Only 9 of 40 profiled peptides (23%) hold a major-regulator approval for any use; 17 (43%) are unapproved.

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• The median price across Nordapep-listed research peptides is £3.39 per mg (best in-stock size), based on 5 compounds. (peptide.wiki, 2026-11-10)

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• Among stocked compounds, price per mg ranges from £0.59 (GHK-Cu) to £5.09 (Retatrutide). (peptide.wiki, 2026-11-10)

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Methodology

• Counts and evidence ratings come from the peptide.wiki editorial database, reviewed November 2026.
• Prices are read from the Nordapep catalogue, using the best price per mg across in-stock sizes of each listing.
• Statistics describe the published literature and a retail catalogue. They say nothing about use in people or animals; all compounds are for in vitro research only.
• Full data: open dataset (CC BY 4.0).

peptide.wiki. (2026). Research peptide statistics. peptide.wiki. https://www.peptide.wiki/statistics