Understand the source comparison
Tesamorelin Real vs Fake: Authentication Comparison
Lyophilized Appearance Uniform white to off-white cake, no color variation, pressed against vial wall Granular texture, yellowish tint, loose powder, visible particulate matter Authentic lyophilization produces consistent cake structure. Color deviation or gra
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This page preserves a source comparison for education. It does not add a rating, recommendation or clinical judgment.
- Lyophilized Appearance
- Uniform white to off-white cake, no color variation, pressed against vial wall
- Granular texture, yellowish tint, loose powder, visible particulate matter
- Authentic lyophilization produces consistent cake structure. Color deviation or granularity indicates contamination or improper freeze-drying
- Vial Seal Integrity
- Pharmaceutical-grade borosilicate glass, tamper-evident crimped aluminum seal, flush butyl rubber stopper
- Reused vials, flip-top caps, hand-crimped seals with irregular compression, visible gaps between stopper and glass
- Crimped seals cannot be removed without deformation. Screw caps or loose stoppers are immediate disqualifiers for research use
- Reconstitution Behavior
- Complete dissolution in 45–60 seconds with bacteriostatic water at 2–8°C, crystal-clear solution, no residue
- Extended mixing required (5+ minutes), cloudy solution, undissolved particles, residue on vial walls
- Genuine peptides dissolve uniformly without agitation. Turbidity signals incorrect amino acid folding or filler contamination
- COA Documentation
- Batch-specific third-party HPLC purity ≥98%, MALDI-TOF mass spec confirmation (1573.57 Da), endotoxin <0.5 EU/mg, named independent lab
- Generic COA without batch numbers, in-house testing only, missing HPLC chromatography, no mass spec data
- Third-party verification is non-negotiable. In-house COAs lack audit trail and cannot be independently verified
- Storage Stability
- Remains clear for 28 days post-reconstitution at 2–8°C, no precipitation, no color shift
- Cloudiness after 48–72 hours, visible aggregation by day five, yellow tint development
- Degradation timeline reveals formulation quality. Authentic peptides include stabilizers that prevent rapid oxidation
- Supplier Transparency
- Multi-batch COA availability on request, cold-chain shipping documentation, traceable manufacturing records
- Refusal to provide batch history, generic shipping without temperature logging, missing manufacturing details
- Legitimate suppliers maintain full documentation trails. Evasiveness on batch records signals unverified sourcing