Chemyo vs PeptiAtlas: Peptide Vendor Comparison 2026
Compare Chemyo and PeptiAtlas — mid vs mid pricing, COA-verified/non-verified testing, 0 shared peptides.
Chemyo
Location: USA
Peptides: 1
COA: ✓ Available
Third-party tested: ✓ Yes
Top peptides:
- • MK-677
PeptiAtlas
Location: Unknown
Peptides: 1
COA: ✗ Not Available
Third-party tested: ✓ Yes
Top peptides:
- • Research Peptides
Comparison Overview
Both Chemyo and PeptiAtlas compete in the mid market segment. Chemyo offers with COA availability and is third-party tested, while PeptiAtlas is without published COAs and third-party tested. Both offer shipping to multiple regions; Chemyo has a reputation score of 4.5/5 vs PeptiAtlas's 4.1/5.
Key Metrics
| Metric | Chemyo | PeptiAtlas |
|---|---|---|
| Established | 2016 | |
| Location | USA | Unknown |
| Price Tier | mid | mid |
| Reputation Score | 4.5/5 | 4.1/5 |
| COA Available | ✓ Yes | ✗ No |
| Third-Party Tested | ✓ Yes | ✓ Yes |
| Shipping Regions | USA, International | Unknown |
| Payment Methods | credit card, crypto, e-check | unknown |
| Peptides Offered | 1 | 1 |
Unique to Chemyo
- MK-677
Unique to PeptiAtlas
- Research Peptides
Chemyo Highlights
Strengths
- Excellent reputation for SARMs quality — considered top-tier
- Rigorous third-party testing with publicly posted lab reports
- 50ml bottles provide more value than industry standard 30ml
Considerations
- Very limited peptide selection — primarily a SARMs vendor
- MK-677 is their only peptide-adjacent compound
PeptiAtlas Highlights
Strengths
- High Finnrick purity score (8.8/10)
- Top Finnrick rating (A)
Considerations
- Very small Finnrick sample size — limited data
Which Vendor to Choose?
PeptiAtlas has been in business longer, offering more operational history.
⚠️ Important: This comparison is for informational purposes only. Research peptides responsibly and consult appropriate medical professionals. The Peptide Index does not endorse any vendor.
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