Ingredient or product comparison
GHK-Cu Real vs Fake: Verification Comparison
Third-Party CoA ISO 17025 accredited lab with named institution, batch-specific HPLC chromatogram, endotoxin <1.0 EU/mg Generic certificate with no lab name, no chromatogram, or in-house testing only Independent verification prevents supplier self-reporting bi
This source-based comparison does not add ratings or recommend a winner.
- Third-Party CoA
- ISO 17025 accredited lab with named institution, batch-specific HPLC chromatogram, endotoxin <1.0 EU/mg
- Generic certificate with no lab name, no chromatogram, or in-house testing only
- Independent verification prevents supplier self-reporting bias. CoAs from unaccredited labs have no audit trail
- Mandatory verification. No CoA means no traceability if contamination occurs
- Packaging
- Crimp-sealed sterile vial, laser-etched batch number, vacuum indicator confirming lyophilisation
- Screw-top vial, smudged printed label, no batch tracking or tamper-evident seal
- Sterile packaging prevents bacterial contamination that invalidates cell culture assays. Non-sterile vials introduce endotoxins
- Non-negotiable for any in vitro work. Screw caps indicate non-pharmaceutical sourcing
- Visual Appearance (Reconstituted)
- Pale blue, completely transparent solution with no precipitation over 48 hours at 4°C
- Blue-green discoloration, visible particles, or complete clarity with no color
- Proper copper chelation produces characteristic blue color. Precipitation indicates free copper ions rather than peptide-bound copper
- Color shift within 24 hours signals unstable chelation. Material will degrade unpredictably
- Molecular Weight Confirmation
- MS spectrum showing 340.85 Da with <0.5% variance from theoretical value
- No MS data provided, or molecular weight variance >2% from expected value
- MS confirms amino-acid sequence and copper incorporation. Variance indicates incomplete synthesis or degraded material
- Required to confirm peptide identity before committing research resources
- Price Range (per 50mg)
- $180–$320 depending on purity grade and supplier scale
- <$100 or >$500 without justification for premium pricing
- Synthesis under controlled conditions costs $2.80–$4.50 per milligram. Prices below this indicate shortcuts or counterfeit sourcing
- Suspiciously low pricing (<$100/50mg) signals bulk resale of unverified material