⚠ FOR LABORATORY RESEARCH USE ONLY · NOT FOR HUMAN CONSUMPTION · QUALIFIED RESEARCHERS 21+
// LIVE · RESEARCH COMPOUNDS · 3RD-PARTY HPLC · EST. 2026

PEPTIDES,
verified.

Research-grade peptides with the chain of custody most vendors skip. 3rd-party HPLC on every lot. Mass spec confirmed. Ambient-stable, discreetly shipped.

Browse Catalog → View Verification
42/sku
Compound catalog
99.8%
HPLC purity
3rd-party
Lab verified
COA/lot
Every batch
// SESSION.LOG — LAB_PIPELINE
status ● operational
lots_released 47 this month
avg_hplc 99.94%
next_batch ships 16:00 CST
RETATRUTIDE◆ TIRZEPATIDE◆ SEMAGLUTIDE◆ BPC-157◆ MOTS-c◆ NAD+◆ IPAMORELIN◆ EPITALON◆ GHK-Cu◆ SERMORELIN◆ TESAMORELIN◆ PT-141◆ RETATRUTIDE◆ TIRZEPATIDE◆ SEMAGLUTIDE◆ BPC-157◆ MOTS-c◆ NAD+◆ IPAMORELIN◆ EPITALON◆ GHK-Cu◆ SERMORELIN◆ TESAMORELIN◆ PT-141◆
// CLINICAL FILE — ORIGIN.LOG
01

Built for the researchers
who read COAs.

The research peptide market is full of landmines. Vendors that rotate domains every six months. Purity claims with no paper to back them up. Labels that don't match what's in the powder. No lot traceability when something does go wrong.

We built PeptideBros around the boring stuff the shady shops skip: a real chain of custody from synthesis to shipment, a 3rd-party HPLC report attached to every lot, discreet tamper-evident packaging, and batch records you can actually read. If a researcher wouldn't trust it in their lab, we don't ship it.

Every compound in our catalog is sourced from qualified synthesis partners, tested on release by an independent analytical lab, and stored under validated conditions until the moment it leaves our facility.

// Founding Principle
"The paperwork isn't overhead. The paperwork is the product."

You shouldn't have to gamble on what's actually in the vial. Purity, mass, endotoxin, sterility — documented per lot, verifiable by the certificate number, before you ever open the cap.

Unknown synthesis origin industry norm
No COA provided common
No lot traceability when things go wrong
Label mismatch documented
PeptideBros sourcing qualified synthesis
3rd-party HPLC every lot
Ambient-stable transit lyophilized, tracked
COA lookup by lot number
// FORMULARY — CATALOG.INDEX
02

42 compounds.
Seven categories.

01 / 07
Weight & Metabolic

GLP-1 therapies and metabolic co-agonists for sustained, clinically-guided fat loss.

RETATRUTIDE · TIRZEPATIDE · SEMAGLUTIDE · 5-AMINO-1MQ · SLU-PP-332 · L-CARNITINE
→
 02 / 07
Healing & Recovery

Tissue repair, anti-inflammatory, and soft-tissue recovery protocols.

BPC-157 · TB-500 · GHK-Cu · KPV · THYMOSIN α-1 · THYMALIN
→
 03 / 07
Growth Hormone Axis

Secretagogues and GH-releasing peptides for hormonal optimization.

CJC-1295 ± DAC · IPAMORELIN · SERMORELIN · TESAMORELIN · GHRP-2/6 · HEXARELIN
→
 04 / 07
Longevity & Anti-Aging

Mitochondrial, telomere, and cellular senescence protocols.

EPITALON · NAD+ · SS-31 · MOTS-c · GLUTATHIONE · PINEALON
→
 05 / 07
Cognitive & Mood

Nootropic and neurotrophic peptides for focus, memory, and resilience.

SEMAX · SELANK · CEREBROLYSIN · DIHEXA · DSIP
→
 06 / 07
Sexual & Hormonal

Libido, fertility, and hormonal support protocols.

PT-141 · KISSPEPTIN · HCG · HMG · OXYTOCIN
→
 07 / 07
Melanocortin & Tanning

Melanin-stimulating protocols for photoprotection and pigment response.

MELANOTAN 1 · MELANOTAN 2
→
// PROCESS.LOG — ORDER.FLOW
03

Four steps.
From synthesis to your lab.

01

Select Compounds

Browse the catalog. Add compounds and dose sizes to your order.

~5 min
02

Verify Researcher

Acknowledge research-use-only terms. Confirm you are a qualified researcher 21+.

instant
03

Lot Assignment

Your order is assigned to an active lot. COA is generated and attached to your file.

same day
04

Ambient Ship

Temperature-controlled shipment to your facility. Signature required. Tracking live.

2–3 days
// SAMPLE WORKFLOW — ORDER #PB-00024871
researcher@peptidebros:~$ order --compound="tirzepatide" --dose=10mg --qty=2
✓ research-use acknowledgment recorded
✓ qualified researcher attestation · on file
lab@peptidebros:~$ assign --order=PB-00024871
✓ lot TIRZ-26-Q2-0034 assigned
✓ COA-TIRZ-26-Q2-0034.pdf generated · attached
shipping@peptidebros:~$ pack --coldchain --signature-required
✓ ambient transit · tamper-evident · carrier tracked
✓ shipment dispatched · tracking live
system@peptidebros:~$
// VERIFICATION STANDARDS — LOT.SPEC
04

The chain of custody
on the paperwork.

// PEPTIDEBROS LOT MANIFEST — RELEASE STANDARD
HPLC PURITY
99.8%
Minimum release threshold. Most lots test >99.95%.
MASS SPEC
CONFIRMED
MALDI-TOF or ESI-MS identity confirmation per lot.
COA PER LOT
100%
3rd-party Certificate of Analysis · full panel.
ENDOTOXIN
<0.25 EU/mL
USP <85> bacterial endotoxin screening.
AMBIENT SHIP
ROOM TEMP
Lyophilized; stable at room temperature in transit.
LOT TRACEABILITY
FULL
Every vial traceable to synthesis batch.
LOOKUP
BY LOT
Enter any lot number — pull the full COA.
DATA
ENCRYPTED
Order data handled under standard security practices.
// WHY PEPTIDEBROS
05

Most research peptide sites
shouldn't be trusted.

Fully documented

Every lot ships with a 3rd-party Certificate of Analysis. Purity, mass, endotoxin — lookup-able by lot number.

Same-day dispatch

Orders placed before 14:00 CST ship same-day in discreet, tamper-evident packaging.

3rd-party verified

Independent analytical lab — not our in-house testing. Signed COA PDF per batch.

Shipped cold

Lyophilized peptide powder is stable at ambient temperature for typical transit windows; refrigerate on receipt.

Your research,
verified.

Documented purity. Lot-tracked synthesis. Discreet ambient shipping. The paperwork most vendors skip.

Browse Catalog → View Standards

⚠ ALL PRODUCTS ARE INTENDED FOR LABORATORY RESEARCH PURPOSES ONLY. NOT FOR HUMAN CONSUMPTION, ORAL INGESTION, OR ANY FORM OF IN-VIVO USE IN HUMANS OR ANIMALS. THESE COMPOUNDS ARE NOT MEDICINES OR DRUGS AND HAVE NOT BEEN APPROVED BY THE FDA. BY PLACING AN ORDER YOU ACKNOWLEDGE YOU ARE A QUALIFIED RESEARCHER OVER THE AGE OF 21.