What is the main difference between GHK-Cu and BPC-157?

Compound class. GHK-Cu is a copper complex of the tripeptide Gly-His-Lys (CAS 89030-95-5, about 340.88 Da). BPC-157 is a synthetic 15-residue peptide (CAS 137525-51-0, about 1419.53 Da) with no metal component.

Are GHK-Cu and BPC-157 tested by the same laboratory?

No. The current GHK-Cu lot was tested by Freedom Diagnostics (Lot M26S012, COA #2604070134, 99.76% by HPLC-MS). The current BPC-157 lot was tested by Janoshik Analytical (Test #97457, Batch 1208, 99.576% by HPLC-MS).

Are GHK-Cu and BPC-157 stored the same way?

No. GHK-Cu is listed for storage at 2–8°C. BPC-157 is listed cool and dry as lyophilized powder. Handling after receipt follows the receiving laboratory's own protocol.

Which sizes are listed for each compound?

GHK-Cu is listed in 50mg and 100mg vials, both covered by the same certificate. BPC-157 is listed in one size, 10mg.

Is a GHK-Cu and BPC-157 blend sold?

No. Both are sold only as separate Research Use Only vials. No blend, topical, cosmetic, capsule or oral format is listed, and neither is for human or veterinary use.

Research / GHK-Cu and BPC-157 Compared — Copper Tripeptide vs Pentadecapeptide Records

September 11, 2026

GHK-Cu and BPC-157 Compared — Copper Tripeptide vs Pentadecapeptide Records

How GHK-Cu and BPC-157 differ on paper: compound class, formula notation, testing laboratory, certificate format, unit sizes and listed storage. Research Use Only, 21+.

GHK-Cu and BPC-157 are often searched together, but on a laboratory record they have little in common. One is a three-residue peptide bound to copper; the other is a fifteen-residue linear peptide. They are tested by different laboratories, documented with different certificate formats and listed for different storage. This page compares them field by field. It is a records comparison only: Hermetica sells them as separate Research Use Only vials and lists no blend. To order, use Buy GHK-Cu Canada or Buy BPC-157 Canada.

Key takeaways

Question	Short answer	Source
Are GHK-Cu and BPC-157 the same kind of peptide?	No. GHK-Cu is a copper-bound tripeptide; BPC-157 is a 15-residue linear peptide	PubChem CID 73587; CID 9941957
GHK identity	Gly-His-Lys, C14H24N6O4, 340.38 g/mol (free tripeptide)	PubChem CID 73587
BPC-157 identity	C62H98N16O22, 1419.5 g/mol	PubChem CID 9941957
Certificates	GHK-Cu: Freedom Diagnostics COA #2604070134; BPC-157: Janoshik #97457	COA library
Sold how?	As separate RUO vials, each with its own record; no blend	Hermetica catalogue

GHK-Cu vs BPC-157: field-by-field comparison

Field	GHK-Cu	BPC-157
Compound class	Copper tripeptide complex	Synthetic pentadecapeptide
Sequence	Gly-His-Lys (3 residues) with bound copper	Gly-Glu-Pro-Pro-Pro-Gly-Lys-Pro-Ala-Asp-Asp-Ala-Gly-Leu-Val (15 residues)
CAS number	89030-95-5	137525-51-0
Molecular formula	C14H24N6O4·Cu	C62H98N16O22
Molecular weight	~340.88 Da	~1419.53 Da
Form	Lyophilized peptide complex	Lyophilized powder
Unit sizes	50mg and 100mg	10mg
Listed storage	2–8°C	Cool and dry
Testing laboratory	Freedom Diagnostics	Janoshik Analytical
Certificate reference	Lot M26S012 · COA #2604070134	Test #97457 · Batch 1208
Reported purity	99.76% (HPLC-MS)	99.576% (HPLC-MS)

Formula notation: why GHK-Cu carries "·Cu"

The GHK-Cu formula is written C14H24N6O4·Cu: the Gly-His-Lys tripeptide plus a bound copper ion. The BPC-157 formula, C62H98N16O22, has no metal component. When a record is compared against the catalogue, note that the GHK-Cu listing describes the copper complex, not the bare tripeptide.

Two laboratories, two certificate formats

The current GHK-Cu certificate is issued by Freedom Diagnostics and is referenced by a lot number and a COA number (Lot M26S012, COA #2604070134). One certificate covers both the 50mg and 100mg listings. The BPC-157 certificate is issued by Janoshik Analytical and is referenced by a test number and a batch (Test #97457, Batch 1208). A records system built around one format needs a field for each. The verification steps differ too: see how to verify a Freedom Diagnostics COA and the Janoshik COA checklist.

Storage listings differ

GHK-Cu is listed for storage at 2–8°C. BPC-157 is listed cool and dry as lyophilized powder. A receiving log that files both under one storage condition will be wrong for one of them. Handling after receipt follows the receiving laboratory's own protocol; general notes are in research peptide storage and handling.

Separate vials, separate records

Each compound is ordered from its own product page: GHK-Cu 50mg, GHK-Cu 100mg and BPC-157 10mg. Hermetica lists no GHK-Cu and BPC-157 blend and no topical, cosmetic, capsule or oral format. Both are Research Use Only laboratory reagents, not for human or veterinary use, and buyers must be 21 or older. Orders ship within Canada only, at a flat $15 CAD per order and free from $150 CAD.

References

PubChem. Glycyl-L-histidyl-L-lysine (GHK), CID 73587: molecular formula C14H24N6O4, molecular weight 340.38 g/mol. pubchem.ncbi.nlm.nih.gov/compound/73587
PubChem. BPC-157, CID 9941957: molecular formula C62H98N16O22, molecular weight 1419.5 g/mol. pubchem.ncbi.nlm.nih.gov/compound/9941957
Pickart L, Margolina A. (2018). Regenerative and protective actions of the GHK-Cu peptide in the light of the new gene data. International Journal of Molecular Sciences, 19(7), 1987. doi:10.3390/ijms19071987
Janoshik Analytical. Test Report #97457, BPC-157 10 mg, Batch 1208; analysis conducted 8 January 2026. Certificate image published by Hermetica Research Labs. View certificate

Research Use Only. Not for human or veterinary use. Purchasers must be 21 or older.

FAQ

What is the main difference between GHK-Cu and BPC-157?: Compound class. GHK-Cu is a copper complex of the tripeptide Gly-His-Lys (CAS 89030-95-5, about 340.88 Da). BPC-157 is a synthetic 15-residue peptide (CAS 137525-51-0, about 1419.53 Da) with no metal component.
Are GHK-Cu and BPC-157 tested by the same laboratory?: No. The current GHK-Cu lot was tested by Freedom Diagnostics (Lot M26S012, COA #2604070134, 99.76% by HPLC-MS). The current BPC-157 lot was tested by Janoshik Analytical (Test #97457, Batch 1208, 99.576% by HPLC-MS).
Are GHK-Cu and BPC-157 stored the same way?: No. GHK-Cu is listed for storage at 2–8°C. BPC-157 is listed cool and dry as lyophilized powder. Handling after receipt follows the receiving laboratory's own protocol.
Which sizes are listed for each compound?: GHK-Cu is listed in 50mg and 100mg vials, both covered by the same certificate. BPC-157 is listed in one size, 10mg.
Is a GHK-Cu and BPC-157 blend sold?: No. Both are sold only as separate Research Use Only vials. No blend, topical, cosmetic, capsule or oral format is listed, and neither is for human or veterinary use.

Research Use Only

All content is provided for informational purposes for qualified researchers working with research materials in a laboratory setting. Products supplied by Hermetica Research Labs are sold strictly for in-vitro research. They are not intended for human or veterinary use, and nothing on this page constitutes medical, health, or dosing guidance. Must be 21+ to purchase.