Peptides in Immune-Signalling Research
Thymic peptides and cathelicidins carry the immune-model literature. Specs, reported ranges and lot documentation for each compound.
By PX1 Research Team · August 4, 2026
Peptides in Immune-Signalling Research
Thymic peptides and cathelicidins carry the immune-model literature.
| Compound | Class | Lowest reported study amount | Vial sizes |
|---|---|---|---|
| Thymosin Alpha-1 | 28-amino-acid thymic peptide | 1.6 mg | 5 mg |
| LL-37 | human cathelicidin antimicrobial peptide | 100 mcg | 5 mg |
| KPV | C-terminal tripeptide of α-MSH | 200 mcg | 10 mg |
Compound-by-compound notes
Thymosin Alpha-1
Thymosin Alpha-1 is a 28-amino-acid thymic peptide studied in immune-signalling research. Standard preparation is 5 mg + 2 mL = 2.5 mg/mL. Reported arms:
| Study arm | Reported amount | Cadence |
|---|---|---|
| Standard arm | 1.6 mg | 2× weekly |
Product page: Thymosin Alpha-1.
LL-37
LL-37 is a human cathelicidin antimicrobial peptide studied in innate-immunity research. Standard preparation is 5 mg + 2 mL = 2.5 mg/mL. Reported arms:
| Study arm | Reported amount | Cadence |
|---|---|---|
| Standard arm | 100 mcg | daily |
Product page: LL-37.
KPV
KPV is a C-terminal tripeptide of α-MSH studied in inflammatory-signalling and mucosal research. Standard preparation is 10 mg + 2 mL = 5 mg/mL. Reported arms:
| Study arm | Reported amount | Cadence |
|---|---|---|
| Low arm | 200 mcg | daily |
| Mid arm | 500 mcg | daily |
Product page: KPV.
How researchers evaluate material before running anything
Purity claims mean nothing without a lot-specific COA showing an HPLC chromatogram, LC-MS identity and endotoxin results. PX1 publishes all three at /coa.
How PX1 documents every lot
Every PX1 lot ships with HPLC purity, LC-MS identity, residual solvent, moisture (Karl Fischer), sterility and endotoxin data. Lot documentation is published at /purity-reports, /endotoxin-reports and /coa. Synthesis, purification, lyophilization and vial fill happen in U.S. facilities — see /manufacturing-process.
Research use only. PX1 Research supplies compounds for laboratory and in-vitro research. Nothing here is medical advice, a dosing recommendation, or an offer for human or veterinary use. Figures cited are reported from published laboratory literature.