PF · 001  /  Research Peptide Systems

Precision.
Quality.
Consistency.

PepFlow engineers ultra-pure research peptides for the next generation of biological science. Every vial is synthesized, 3rd-party tested, verified, and released under a closed, HPLC-audited flow — from sequence to shipment.

Explore Catalog → See Our Quality
≥99.2%
Median Purity
100%
Lot Tested
3×
Independent Assays
Next-day
Shipping
SEQ · GLP-039
MW · 3297.72
HPLC · 99.4%
LOT · PF·26·0814
Purity Index
99.42%
Endotoxin
<0.05EU/mg
$10 flat-rate shipping · on every order, no matter how many peptides you buy
FLAT RATE
§ 01  ·  Why PepFlow

A closed loop from sequence to shipment.

We built PepFlow to remove ambiguity from research-grade peptides. Every batch moves through a continuous pipeline where synthesis, analytics, and release are engineered as one system — not four vendors.

// 01 · PURITY

Ultra-pure by construction.

Median HPLC purity of 99.2%+, verified by orthogonal LC/MS on every lot. No composite averages — every vial is 3rd-party tested to ensure premium quality standards.

// 02 · PRECISION

Engineered flow, not batch chaos.

Continuous solid-phase synthesis, automated cleavage, and inline lyophilization keep sequence fidelity locked from residue one through release. Every step is timestamped.

// 03 · CONSISTENCY

Consistent, batch after batch.

Every production run is held to the same premium quality standards, so what you receive today performs the same as what you receive next month. Reliability engineered into the process.

§ 03  ·  Catalog

The launch catalog.

Research-grade sequences organized across four therapeutic categories. Every vial is synthesized in-house, 3rd-party tested to premium quality standards, and shipped for research use only.

CAT · 01

Weight Management & Metabolic Health Research

GLP-1 / GIP / GCG receptor programs
PF · MET · 01
In Stock
Retatrutide 20mg vial
TRIPLE AGONIST

Retatrutide

20 mg · lyophilized

Investigational GLP-1 / GIP / glucagon triple receptor agonist for metabolic research.

Purity
99.4%
MW
4731Da
Form
Acetate
PF · MET · 02
In Stock
Tirzepatide 20mg vial
DUAL AGONIST

Tirzepatide

20 mg · lyophilized

GLP-1 / GIP dual agonist analog for glycemic and body-composition studies.

Purity
99.6%
MW
4813Da
Form
Acetate
PF · MET · 03
In Stock
KLOW 80mg vial
RECOVERY BLEND

KLOW

80 mg · lyophilized

Blended research formulation combining Kisspeptin-10, LL-37, ozone-modulated and Wolverine peptides.

Purity
≥98%
Blend
4-part
Form
Acetate
CAT · 02

Anti-Aging & Longevity Research

GHRH / GHS-R / mitochondrial signaling
PF · LNG · 01
In Stock
CJC-1295 with Ipamorelin vial
GHRH + GHS-R BLEND

CJC-1295 / Ipamorelin

5 mg each · No DAC

Paired GHRH analog and selective ghrelin receptor agonist. No-DAC formulation for pulsatile release research.

Purity
99.5%
MW
3367 / 711
Form
Acetate
PF · LNG · 02
In Stock
Tesamorelin 5mg vial
GHRH ANALOG

Tesamorelin

5 mg · lyophilized

Stabilized growth-hormone-releasing hormone analog for visceral adiposity and metabolic research.

Purity
99.3%
MW
5195.8Da
Form
Acetate
PF · LNG · 03
In Stock
MOTS-c 40mg vial
MITOCHONDRIAL

MOTS-c

40 mg · lyophilized

Mitochondrial-derived peptide implicated in metabolic homeostasis and cellular longevity studies.

Purity
99.2%
MW
2174.6Da
Form
Acetate
PF · LNG · 04
In Stock
NAD+ 500mg vial
COENZYME

NAD+

500 mg · lyophilized

Nicotinamide adenine dinucleotide for cellular energy, redox, and sirtuin-pathway research.

Purity
≥99%
MW
663.4Da
Form
Sodium
CAT · 03

Recovery, Healing & Skin Health Research

Tissue, vascular, and cutaneous research
PF · REG · 01
In Stock
BPC 157 10mg vial
CYTOPROTECTIVE

BPC-157

10 mg · lyophilized

Body-protective compound fragment studied for gastrointestinal and musculoskeletal repair models.

Purity
99.4%
MW
1419.5Da
Form
Acetate
PF · REG · 02
In Stock
GHK-Cu 50mg vial
COPPER TRIPEPTIDE

GHK-Cu

50 mg · lyophilized

Copper-bound tripeptide investigated for extracellular matrix remodeling and skin research.

Purity
99.5%
MW
402.9Da
Form
Cu-Complex
CAT · 04

Cognition, Mood & Stress Resilience Research

Anxiolytic and neuropeptide research
PF · NEU · 01
In Stock
Selank 10mg vial
HEPTAPEPTIDE

Selank

10 mg · lyophilized

Tuftsin-derived heptapeptide investigated in anxiolytic and neuroimmunomodulatory research.

Purity
99.3%
MW
751.9Da
Form
Acetate
Request the full catalog & pricing →
§ 04  ·  Quality & Verification

Every vial is 3rd-party tested to ensure premium quality standards.

Every batch is run through the same orthogonal analytical workflow — HPLC, LC/MS, endotoxin, and moisture — before it ever leaves the facility. Nothing ships that does not meet spec.

Lot PF·26·0814 · HPLC · 214nm
Live QC Feed
mAU 1200 900 600 300 min 2 4 6 8 10 12 14 PF-039 · 8.34 min · 99.42% 0.11% 0.19% 0.28%
99.42%
Main Peak
4113.6Da
Observed MW
<0.05EU/mg
Endotoxin
1.2%
H₂O Content
Analytical Workflow

Data that stands up to scrutiny.

Every lot is measured on the actual instruments used to release it. If a batch does not meet spec, it does not leave the facility.

Need a Certificate of Analysis for a specific peptide? Contact us and we'll email the COA file directly.

  • HPLC
    Reverse-phase, 214 nm & 254 nmDual-wavelength gradient over C18 stationary phase
  • LC/MS
    Electrospray ionization, positive modeObserved mass within ±0.1 Da of theoretical
  • ENDO
    Kinetic chromogenic LALAll lots screened below 0.5 EU/mg threshold
  • MOIST
    Karl Fischer titrationResidual water quantified per fill session
Third-Party Verification  ·  Refund Guarantee

Test it yourself. If it doesn't meet spec, we refund you in full.

We stand behind every vial we release, and we encourage researchers to send their own samples out for independent third-party testing — your data, your lab, your standards.

If for any reason the material does not meet your quality requirements, contact us with the report and we will issue a full refund — no restocking fees, no fine print.

§ 06  ·  Affiliate Program

Share PepFlow. Earn on every order.

Get your own personalized discount code. Anyone who uses it saves 30% off their order — and you get paid every time it does. No quotas, no clawbacks, no fine print.

  • 30% off, instantly
    Your code delivers a real discount at checkout — no gimmicks, no expiration.
  • Paid monthly by PayPal, Cash App, or Zelle
    Choose your payout method. Balances settle once a month, no minimums.
  • Live dashboard for your code
    Track uses, earnings, and payouts in a private affiliate portal.
  • Approved in under 24 hours
    Submit the form and we’ll email your personalized code the same business day.
// Affiliate Application
30% OFF · CODE
// AT LEAST ONE PAYOUT METHOD REQUIRED
// Application received · under review
Thanks — your application is in. We personally review every applicant to keep the program credible for research-use referrals. Expect an email with your custom affiliate code within 24 hours to the address you provided.
Once your code is issued, every checkout that uses it applies 30% off and credits your affiliate balance. Payouts are issued once a month, no minimums.
§ 06  ·  Get In Touch

Talk to the source.

Whether you're evaluating a supplier, exploring a partnership, or scoping a custom order — you'll get a direct, straightforward response, not a form-farm.

// Message sent to info@thepepflow.com
DIRECT · [email protected]
AFFILIATE · [email protected]