Brand · 01

FourNines

Purity Without Compromise

The name comes from a number: 99.99%. Not a marketing claim — an engineering aspiration our manufacturing process targets with every single batch.

USA ImportedcGMPPIC/SHACCPTFA TestedEndotoxin TestedHeavy Metal TestedMicroplastic Free

The name comes from a number: 99.99%. It represents not a marketing claim but an engineering aspiration — the level of purity our manufacturing process targets with every single batch. In practice, we consistently achieve 99.9x% measured purity, a result that places FourNines in a tier most suppliers in the global peptide market cannot reach or even attempt.

FourNines is sourced exclusively from the United States, produced in facilities operating under cGMP, PIC/S, and HACCP certification — the same regulatory frameworks applied to pharmaceutical and food safety manufacturing at the highest international standards. Every batch is TFA-tested, endotoxin-tested, heavy-metal tested, and microplastic-free. These are not standard features in the current peptide industry. TFA — a residual solvent from peptide synthesis — is present in most commercially available peptides and degrades both stability and biological tolerance. Endotoxins are a known inflammatory risk in injectable products. Microplastics are only beginning to be scrutinised in the wellness space, but we scrutinise them now. Acetate and hydrochloride (HCl) salt forms are used as counter-ions throughout production, ensuring chemical stability and optimal bioavailability.

This is the product for the person who has done the research — with no compromise. Who understands why purity matters, why source country matters, why the absence of certain contaminants is not optional. FourNines is for the longevity physician, the elite biohacker, the professional athlete who treats their body with the same precision they apply to everything else in their life. There is nothing more we can do to improve what is in the vial. The only question is whether you require it.

Every FourNines vial ships with a batch-specific Certificate of Analysis documenting HPLC chromatogram, mass-spectrometry identity confirmation, net peptide content, and the additional analytical screens specific to this tier — TFA residual quantification, endotoxin assay (LAL), heavy-metal ICP-MS, and microplastic screening. Lot traceability is documented end-to-end from raw amino acid to final fill. For researchers publishing data or operating under regulatory oversight, this documentation package meets or exceeds the standard expected for pharmaceutical-grade inputs.

FourNines · lot verified

Frequently asked questions

What does "FourNines" mean?

The name references 99.99% — the engineering purity target we specify on every batch. Measured purity consistently lands at 99.9x%, well above the ≥99% floor of the rest of our catalog and of most peptide suppliers globally.

Where is FourNines manufactured?

Exclusively in the United States, at facilities operating under cGMP, PIC/S, and HACCP certification — the same pharmaceutical-grade quality framework used for human-therapeutic manufacturing. Every step from raw amino acids through final lyophilization is US-sourced and documented.

What additional testing does FourNines include beyond standard HPLC?

Every batch ships with TFA residual quantification, endotoxin screening (LAL assay), heavy-metal analysis (ICP-MS), and microplastic testing. These are in addition to the standard HPLC purity + mass-spectrometry identity confirmation that every LifeSpanSupply batch includes.

Who is FourNines for?

Researchers, clinicians, and institutional buyers who need pharmaceutical-grade analytical documentation for their protocols — published research, regulatory submissions, sensitive biomarker work where contaminant confounders must be ruled out. If your research requires the data package that FourNines COAs carry, it is the right tier.

How does FourNines pricing compare?

FourNines sits at the premium tier of our catalog, reflecting the additional analytical work, smaller batch sizes, and stricter raw-material specifications. For protocols where those additional screens are load-bearing to the research question, the premium is justified; for general research work, Supreme Biologics provides the same ≥99% HPLC purity at a lower price point.