Quality & testing
Receipts on
every single vial.
Every peptide in the Axis Bio Lab catalog is manufactured, lyophilized, and third-party analyzed by Telehealth Peptides, a US-based research manufacturing facility with a fully instrumented QC lab. No lot ships without a signed certificate of analysis.
Manufacturing partner
Made with
Telehealth Peptides.
Telehealth Peptides operates a cGMP-aligned US facility dedicated to research-grade peptide synthesis. Their chemists handle solid phase synthesis, cleavage, RP-HPLC purification, lyophilization, and final QC under a single roof — which means every lot we ship has a fully documented chain of custody.
Axis Bio Lab operates as their exclusive DTC research storefront. We do not blend, we do not rebrand, and we do not source from aggregators. One lab. One bill of materials. One signature on the COA.
The test panel
Six assays, every lot.
01 · assay
Reversed-phase HPLC
Gradient C18 chromatography on every lot. Purity reported as percent peak area at 214 nm.
02 · assay
ESI mass spectrometry
Electrospray ionization confirms molecular mass within 1 Da of theoretical for sequence identity.
03 · assay
Karl Fischer titration
Residual water content measured per lot — typical results under 6%, reported on every COA.
04 · assay
LAL endotoxin assay
Limulus amebocyte lysate testing on applicable SKUs. Results reported in EU/mg with hard limits.
05 · assay
Peptide content (N)
Nitrogen analysis determines actual peptide content separately from salt and water fractions.
06 · assay
Acetate counterion
Ion chromatography quantifies the trifluoroacetate/acetate salt fraction, reported per lot.
Cold chain
From −20°C freezer
to your bench.
Peptide orders ship with phase-change gel packs in insulated mailers. Temperature-sensitive SKUs get overnight carriage. Tracking is active from the moment the carrier scans the label out of the Telehealth Peptides fulfillment center.
- Bulk storage
- −20°C, desiccated, amber glass
- Fulfillment temp
- 2–8°C cold packs, overnight
- Discretion
- Plain outer carton, no product names
- Tracking
- Live tracking from lab to doorstep
- Chain of custody
- Lot number printed on every carton
Start with a COA
Browse the COA library.
Every lot we have ever shipped is searchable and downloadable — by product, by lot number, or by date.