Understand the source comparison
LL-37 Cost 2026: Supplier Tier Comparison
Supplier pricing reflects the depth of quality verification included with each batch, not arbitrary markup. Understanding what each tier actually tests helps researchers match peptide cost to study requirements. Budget $80–$100 HPLC purity report only Not perf
No winner is assigned.
This page preserves a source comparison for education. It does not add a rating, recommendation or clinical judgment.
- Supplier pricing reflects the depth of quality verification included with each batch, not arbitrary markup. Understanding what each tier actually tests helps researchers match peptide cost to study requirements.
- Budget
- $80–$100
- HPLC purity report only
- Not performed
- Preliminary dose-finding, mechanism-agnostic assays where minor potency variance is acceptable
- Adequate for exploratory work; risk of batch-to-batch inconsistency limits reproducibility in published studies
- Mid-Tier
- $120–$180
- HPLC + mass spectrometry
- Molecular weight confirmed; single-residue substitutions may not be detected
- Standard antimicrobial assays, cell viability studies, non-regulated research
- Reliable for most research applications; mass spec catches major synthesis errors but not all sequence variants
- Premium
- $200–$250
- HPLC + MS + full amino acid sequencing + endotoxin testing
- Complete sequence verification via Edman degradation or tandem MS
- Immune cell assays, published reproducibility studies, multi-batch longitudinal models
- Highest fidelity; sequence-verified peptides eliminate a major confounding variable in mechanistic research
- Real Peptides operates in the premium tier, with LL-37 priced to reflect small-batch synthesis and batch-specific sequencing verification. The cost includes documentation researchers can cite in methods sections and submit to journal editors during peer review. A requirement budget-tier suppliers rarely meet.