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Veteran owned · Tested in Ashland, Kentucky

High Purity Research Peptides, Made in the USA

PrymaLab LLC is a veteran-owned supplier of research peptides, bioregulators and research chemicals in Ashland, Kentucky. Peptides are synthesized at US facilities, and every lot is tested in PrymaLab's own laboratory by HPLC and mass spectrometry before it ships; each product page links to the lot's certificate of analysis, which you can verify by number and key. Nothing ships below 99.0% purity by HPLC. Orders placed before 12 PM ET ship the same day, with free US shipping over $100. All products are supplied for laboratory research only and are not for human or veterinary use.
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See lab results

Free USA shipping over $100. Every order ships with its lot certificate; verify it online. Sold for laboratory research only.

  • Every lot tested in our own labRP-HPLC purity, LC-MS identity, endotoxin and sterility
  • Certificate with every orderNumber and key you can verify online
  • Third-party testing guaranteeWrong compound or short on purity: full refund plus the test
  • Same-day shippingFree US shipping over $100
  • Veteran ownedAshland, Kentucky

Fall discount

15% off every order this fall, applied automatically at checkout.

No code to type. Stacks with the 10% pay-by-bank discount. Free US shipping over $100, worldwide over $200.

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Why researchers choose PrymaLab

A standard you can verify.

Six commitments. Every one of them is a number you can check today, not a claim.

01

Tested in our own lab

Every lot is run in PrymaLab's laboratory in Ashland, Kentucky: purity by RP-HPLC, identity by LC-MS, water content by Karl Fischer, endotoxin by LAL and sterility. In-house, and we say so on the certificate.

99%minimum purity by RP-HPLC, or the lot does not ship
02

A certificate for every lot

The lot number is on the vial. Its certificate of analysis is published online with a number and a key, so anyone can check the result against the vial in their hand.

109lot certificates published and verifiable
03

Third-party testing guarantee

Have any PrymaLab product tested by an independent laboratory of your choice. If it is not the compound on the label at the stated purity and amount, we refund the order in full and pay for the test.

100%refund plus the cost of the test
04

Same-day shipping, free over $100

Orders placed before 12 PM ET ship the same day with tracking. Free standard shipping on US orders over $100; cold-chain shipping is available for sprays and pens.

12 PMET cut-off for same-day dispatch
05

Made and tested in the USA

US synthesis, Kentucky testing and Kentucky fulfilment. Nothing is repackaged from an overseas supplier between synthesis and the vial, and every customs form is accurate.

Ashland, KYlab, stock and fulfilment under one roof
06

Veteran-owned, reviewed by researchers

PrymaLab LLC is a veteran-owned company. Reviews are written by customers on the product pages; verified owners are marked, nothing is paid for and nothing negative is removed.

400customer reviews, 4.7 average rating

Swipe for all six

How every lot is tested

Why Choose PrymaLab for Research Peptides?

Every lot passes five tests in our own laboratory before it is listed. The results are published with the lot number, and the certificate says plainly that they are in-house results.

01

PurityRP-HPLC

Reversed-phase HPLC separates the target peptide from truncated sequences and synthesis by-products. The percentage on the certificate is this lot's own result, not a batch average.

02

IdentityLC-MS

Mass spectrometry confirms the molecular weight of what is in the vial matches the sequence on the label.

03

Water contentKarl Fischer

Residual water in the lyophilized cake, so the stated amount is peptide, not moisture.

04

EndotoxinLAL

Limulus amebocyte lysate screening for bacterial endotoxins, which HPLC cannot see.

05

SterilityCulture

Each lot is cultured to confirm no microbial growth before it is released.

Verified purity

Every batch is tested by HPLC and mass spectrometry before release. We confirm molecular identity and purity.

What the numbers mean

HPLC separates the target peptide from truncated sequences and synthesis byproducts. Mass spectrometry confirms the molecular weight matches the sequence you ordered. Nothing ships below 99%.

Global Standards

Every lot is run on the same written HPLC and mass-spectrometry procedure against fixed specifications: 99.0% purity, 1.0% largest impurity, 5.0% water, 5.0 EU/mg endotoxin. Results are in-house (PrymaLab Analytical); the laboratory is not ISO 17025 accredited, which is why we publish the certificate and back it with a third-party testing guarantee.

Tested in Kentucky

Our peptides are made at US synthesis facilities. Every lot is tested in our own Ashland, Kentucky lab before it is released, and you can send any lot to an outside lab under our guarantee.

Why domestic matters

Most research peptides sold online are repackaged from overseas suppliers. A short supply chain can be audited. A long one cannot.

Dedicated Team

Our team of biochemists and analytical researchers brings decades of combined expertise to every research compound we test and ship.

Scientists Behind Every Vial

Our team of biochemists and analytical researchers brings decades of combined expertise to every product we supply.

Scientific Integrity

Every lot is tested in our own lab, and its certificate of analysis carries a number and key you can verify. You can also send any lot to an outside lab: if the result does not match the label, we refund the order and pay for the test.

Transparency at Every Step

Scientific integrity is the foundation of everything we do at PrymaLab. Every lot is tested in our own lab for purity and identity, with a certificate of analysis you can check before it reaches your lab.

Ethical Research

We deliver responsibly sourced, American-made peptides developed under strict safety and ethical research guidelines. Our peptides are synthesized in controlled U.S. laboratory environments with full regulatory awareness.

Responsible Science, American Made

PrymaLab is proudly American-made, operating under strict ethical research guidelines and responsible sourcing practices. Our peptides are synthesized in controlled U.S. laboratory environments with full regulatory awareness.

Reliable Support

Knowledgeable peptide specialists provide responsive guidance on everything from a ghk-cu peptide for sale to research application, supporting your work from the first question to the final result.

Expert Guidance, Always Available

Our peptide specialists are here to support your research journey from start to finish.

Latest published lot certificates

All published results →
PNC-27 5 mg lyophilized research peptide vial with carton – PrymaLab, made and tested in the USA PNC-27 Lot PL-2609-077 · Sep 24, 2026 99.62% purity (RP-HPLC) · identity 4,032.1 Da Open certificate PL-26-00077 Vilon 20 mg lyophilized research peptide vial with carton – PrymaLab, made and tested in the USA Vilon Lot PL-2609-120 · Sep 19, 2026 99.54% purity (RP-HPLC) · identity 275.5 Da Open certificate PL-26-00120 Triptorelin 2 mg lyophilized research peptide vial with carton – PrymaLab, made and tested in the USA Triptorelin Lot PL-2609-118 · Sep 19, 2026 99.30% purity (RP-HPLC) · identity 1311.7 Da Open certificate PL-26-00118 Tirzepatide 100 mg lyophilized research peptide vial with carton – PrymaLab, made and tested in the USA Tirzepatide Lot PL-2609-117 · Sep 19, 2026 99.29% purity (RP-HPLC) · identity 4813.6 Da Open certificate PL-26-00117 Verify any certificateEnter the number and key printed on the vial's certificate, or scan its QR code.Go to the verify page

Third-party testing guarantee. Have any PrymaLab product tested by an independent laboratory of your choice. If the result does not come back as the compound named on the label, at the purity and amount stated, we refund the order in full and reimburse the cost of the test. Our own results come from PrymaLab Analytical in Ashland, Kentucky; they are in-house results, not an independent test, and we say so on every certificate.

Why researchers buy from a US lab

Advancing Humanity by Enabling Scientific Discovery.

Most research peptides sold online are repackaged from overseas suppliers, and the chain between synthesis and the vial is impossible to audit. Ours is short. Our peptides are made at US synthesis facilities, then tested in our own lab in Ashland, Kentucky, and shipped the same day the order clears. If a batch does not reach 99% on HPLC, it does not go out.

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Two researchers in lab coats and safety glasses working together at a laboratory bench
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Laboratory Testing

Rigorous, laboratory-grade testing confirms that every peptide vial meets our 99%+ purity standard before it ships.

Research Collaboration

We partner with leading researchers to advance peptide science and support breakthrough discoveries.

Data Analysis

Data-driven insights into peptide purity, potency, and performance help you optimize your research outcomes.

Shop by catalogue

MAIN CATEGORIES

Three catalogues, one standard: every item is tested lot by lot in Ashland, Kentucky.

PEPTIDES

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BIOREGULATORS

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RESEARCH CHEMICALS

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Shop by research focus

PEPTIDE CATEGORIES

The whole catalogue, grouped the way researchers look for it. Everything named below is in stock and tested lot by lot.

Formats and research focus

Explore the catalog by research focus. The peptide nasal sprays arrive as metered solution, the preloaded autoinjectors as filled 3ml pens, and the peptide bioregulators as lyophilized vials. Recovery compounds sit under healing and recovery peptides, and the growth and performance range under growth hormone and performance peptides.

Bioregulators

Each bioregulator lists its amino acid sequence and handling conditions on the product page, including Cardiogen, Bronchogen, Prostamax and Ovagen. Every item ships with a certificate of analysis and is supplied for research use only.

The organ series and the KLOW pen

The organ series continues with Pancragen for pancreatic work, Livagen for hepatic and Vilon for thymic, all supplied as 20mg lyophilized vials. Where reconstitution is not wanted, the KLOW blend autoinjector arrives as a filled 3ml pen at 80mg/ml, and the same pen format now covers more than fifty compounds, among them BPC-157, KPV, PT-141, VIP5, MOTS-c and Semax.

Blends and needle-free formats

Blends and needle-free formats sit alongside the single compounds. The SUPER Human amino blend carries eight free amino acids totalling 790mg in one lyophilized vial, and the HHB hair and nail blend supplies biotin, choline, inositol and the B-complex vitamins at 150mg/ml. The Lipo-C lipotropic blend covers the metabolic side. Where an injection is not wanted, both BPC-157 and TB-500 are stocked as metered nasal sprays. Two compounds sit outside the peptide range proper: Follistatin 344, a recombinant glycoprotein rather than a synthetic peptide, and RAD-150 (TLB-150) capsules, an esterified analogue of RAD-140 verified at ≥99% by HPLC.

Most ordered

The items ordered most often are the PT-141 nasal spray (10mg bremelanotide, metered), the Semax nasal spray and the KLOW blend in both formats: the KLOW blend 80mg vial (KPV, BPC-157, TB-500 and GHK-Cu, lyophilized) and the pen above. Retatrutide 10mg and Retatrutide 20mg cover the incretin work, NAD+ 1000mg is a gram-scale lyophilized vial, GHK-Cu 100mg is the single-compound copper peptide, and IGF-1 LR3 is also stocked as a nasal spray. Each product page carries the lot certificate of analysis and the storage conditions. Every item is supplied for laboratory research only.

New to a compound? Start here

New to a compound? Start with the guides: BPC-157 for beginners, TB-500 vs BPC-157, what is in the KLOW blend, what is in the SUPER Human blend, the GHK-Cu copper peptide guide and the retatrutide reconstitution guide, with the handling basics in how to reconstitute peptides and how to read a purity certificate. The peptide reconstitution calculator turns any vial and water volume into syringe units.

Researcher pipetting at a workstation with analysis monitors and laboratory glassware
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Growth Hormone & Performance Research Peptides

Explore how ipamorelin, IGF-1 LR3, sermorelin, and CJC-1295 are advancing growth hormone secretagogue research.

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Research team reviewing results at microscopes and monitors in a laboratory
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Healing & Recovery Research Peptides

Investigate the bpc 157 peptide for sale, TB-500, and thymosin beta-4 for their role in tissue repair and recovery research.

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Scientists examining samples with a laptop and microscopes in a laboratory
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Anti-Aging & Longevity Research Peptides

Unlock the potential of the epitalon peptide for sale, MOTS-c, and bioregulator peptides in cellular regeneration and longevity research.

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Three scientists working with microscopes and equipment in a research laboratory
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Weight Loss & Metabolic Research Peptides

Study retatrutide, tesamorelin, 5-amino-1mq, the ara-290 peptide for sale, and the AOD 9604 peptide for sale for their impact on metabolic function and fat metabolism.

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Researcher holding a flask at a laboratory bench beside analysis monitors
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Cognitive, Sleep & Mood Research Peptides

Research selank, semax, the dihexa peptide for sale, DSIP, and other nootropic peptides for their effects on cognition, sleep, and mood.

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Researchers at a laboratory bench reviewing imaging results on screens
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Skin, Hair & Beauty Research Peptides

Explore Melanotan, GHK-Cu, the flgr242 peptide for sale, and other cosmetic peptides studied for skin rejuvenation, hair restoration, and beauty at the cellular level.

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Affiliate program

Get paid to recommend PrymaLab. 15% to 40% on every order you refer.

Your own link and code, a real-time dashboard with every click and every order, and payouts on the 1st and the 15th of each month. Every term is on the program page; nothing is hidden in a PDF.

  • Your code gives a new customer 10% off their first order and tracks to you, no link needed.
  • 60-day cookie on your link; your code never expires. Subscription renewals keep paying.
  • Dashboard with clicks by day, every order, your rate, and every reversal with its reason. Export it any time.
  • Paid by PayPal, ACH, Zelle or USDC once $25 is approved (14-day hold after shipping). You can request a payout from the dashboard.
Apply in two minutes Read every term

All PrymaLab products are sold for laboratory research use only; affiliates agree to the same standard in their content. Already an affiliate? Open your dashboard.

Commission tiers, by monthly referred sales

Starterfrom the first order15%
Bronzeover $2,500 / month20%
Silverover $7,500 / month25%
Goldover $20,000 / month30%
Platinumover $40,000 / month35%
Eliteover $75,000 / month40%

Commission is calculated on the order subtotal after discounts. Tiers move up the day you cross a threshold and never move down mid-month. Referred wholesale partners earn you a share of their orders too.

Research hub

KNOWLEDGE BASE

Mechanism breakdowns, study summaries and handling guides, written for the bench.

All articles

Guides and tools

Peptide storage and stabilityHow lyophilized powder and solutions should be keptHow we test purityWhat RP-HPLC and LC-MS results on a certificate meanPen vs vialWhat changes between a preloaded pen and a lyophilized vialPeptide calculatorConcentration and volume arithmetic for the lab

Questions, answered

FAQ

Shipping, testing, storage and ordering. Anything else: the chat assistant can bring a person into the conversation.

PrymaLab is an American-made, veteran-owned research peptide supply company. We supply lyophilized peptide compounds, polypeptides, and liquid research chemicals to scientists, laboratories, and research professionals nationwide. Every product in our catalog is synthesized in the USA, tested in our own lab to 99%+ purity by HPLC, and supplied for research use only.
Absolutely not. Every product sold on PrymaLab.net is strictly for research use only and is not intended for human consumption under any circumstances. If any product is intentionally or accidentally ingested, contact a healthcare provider immediately. Any customer who indicates intent to consume our research peptides will have their order canceled and their account permanently suspended. PrymaLab will not discuss the potential effects of ingestion — doing so would be unlawful.
Most orders are processed and shipped the same day they are placed. Orders submitted after 12:00 PM EST ship the following business day (excluding Sundays). Because our research peptides ship from within the United States, nationwide shipping is exceptionally fast regardless of the payment method, such as credit cards, you choose.
We do not process orders by phone. Our professional answering service forwards inquiries to our support team, but all research peptide orders must be placed directly through PrymaLab.net to ensure accuracy and security.
Every lot is tested in our own laboratory by HPLC (purity) and mass spectrometry (identity), and each product page links to that lot's certificate, which you can verify at /testing/verify/ with its number and key. If an independent laboratory's result differs from our certificate, we refund the order in full and reimburse the cost of the test.
All of our research peptides and liquid research chemicals are proudly manufactured in the United States. PrymaLab is committed to American-made quality, ensuring every product meets the highest standards of purity, potency, and scientific integrity.
A certificate of analysis (COA) is a document that reports the laboratory test results for a specific peptide batch. Each PrymaLab COA confirms molecular identity, 99%+ verified purity, and potency using HPLC and mass spectrometry. A COA is available with every order, so you can confirm exactly what your vial contains before research begins.
If your order did not process, try clearing your browser's cache or switching to a different browser. When you successfully click "Process Order," a processing status bar appears and typically completes within 30 seconds. If it takes longer than 2 minutes, contact our support team. Check your inbox and spam/junk folders for the automatic confirmation email, which is sent immediately upon successful completion. Our live chat is available 9 AM–9 PM EST for real-time help.
Contact our support team as soon as possible and we will update your shipping information. If your order has already shipped with incorrect details, you will need to wait until the package is returned to our facility before we can reship it. We cover reshipping fees for domestic orders within the USA; international reship fees are the customer's responsibility.
Log into your account on PrymaLab.net to view your complete order history. If you placed an order before creating a free account, contact our support team and we will locate it for you.
You can reset your password using the password recovery page on our website. Enter the email address associated with your account to receive reset instructions.
No. All liquid research chemicals are stable at room temperature. We do, however, recommend refrigerating research peptides after reconstitution with bacteriostatic water to preserve stability.
Lyophilized is the scientific term for freeze-dried. It describes the state in which our research peptides ship and are stored. Lyophilized peptides remain stable at room temperature for approximately two years and don't require refrigeration until reconstituted. Freeze-drying preserves molecular integrity, purity, and potency throughout storage and transit.

Customer reviews

What researchers say

Written by customers on the product pages. Verified owners are marked; nothing is paid for and nothing negative is removed.

All research peptides

Customer reviews

4.75
Based on 400 reviews
5
81%
323
4
13%
52
3
6%
25
2
0%
0
1
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With images (3) Verified (399)
All stars (400)
1 2 ... 34
June Callahan
October 27, 2026
quality
Wonderful quality. The vial arrived sealed tight with the flip-top intact, and the water is perfectly clear. I use it for reconstituting my research p...More
Wonderful quality. The vial arrived sealed tight with the flip-top intact, and the water is perfectly clear. I use it for reconstituting my research peptides and it works beautifully every time. The expiration date is printed right on the label, which I appreciate. Fast shipping and well packaged too. Highly recommend.
Helpful? 0 0
Michael Hendricks
October 23, 2026
The best
These guys r the best, cheapest, fastest and highest quality fs. thanks.
Helpful? 0 0
Jason McGuire
October 23, 2026
Awesome!
Fast shipping great product, thanks.
Helpful? 0 0
Jared Rowe
October 23, 2026
game changer
This makes things so much easier and works great.
Helpful? 0 0
Sara Smith
October 21, 2026
cheap
fast shipping, great customer service, best prices around!
Helpful? 0 0
Marco Silva
October 15, 2026
Impressed
Impressed. Ordered Saturday, it was here Monday. Gel pack still frozen, pen sealed, needle tips in the box. The whole thing feels like it came from a ...More
Impressed. Ordered Saturday, it was here Monday. Gel pack still frozen, pen sealed, needle tips in the box. The whole thing feels like it came from a pharmacy. My last vendor sent pens warm in a plain envelope. Night and day difference.
Helpful? 0 0
Mabel Thornton
October 14, 2026
The details are right
I've ordered bacteriostatic water from four different vendors over the years and most of them treat it like an afterthought - plain vials, no expirati...More
I've ordered bacteriostatic water from four different vendors over the years and most of them treat it like an afterthought - plain vials, no expiration date, sloppy packaging. PrymaLab treats their bac water like an actual product. The 3ml vial arrives sealed with the flip-top intact, the label has the benzyl alcohol content, lot number, and expiration date all printed clearly, and the water itself is perfectly clear. The stopper is good quality rubber that doesn't crumble or core even after multiple punctures over several weeks. I reconstitute all my research peptides with it and have never had a single issue with cloudiness or contamination. Shipping is always 2-3 days in a well padded mailer. It's a small thing in the grand scheme but the details are right, and the details being right is exactly why I keep coming back to this company for everything. Five stars.
Helpful? 0 0
Leticia Bruno
October 14, 2026
The pen format is the future
I'm a nurse practitioner and my interest in BPC-157 started with tendon healing research, which I've been running for about 3 years now. I've sourced ...More
I'm a nurse practitioner and my interest in BPC-157 started with tendon healing research, which I've been running for about 3 years now. I've sourced it every way you can - vials, sprays, and now preloaded pens. Let me tell you why the pen format from PrymaLab is my favorite. First, the cold chain. It arrives in a foil insulated mailer with a frozen gel pack, every single time, and I've checked - the pack is always still cold to the touch. Second, the pen quality. This is not a cheap plastic toy. The plunger action is smooth, the dose dial clicks precisely, and the 5mg/ml concentration is printed right on the label along with the lot number. Third, the convenience. No reconstitution means no bac water, no syringes, no math. The needle tips come included in the box, which saves me a separate order from a medical supply site. I've placed five orders over the past year and every one has been identical - 2-3 day shipping, sealed packaging, frozen gel pack. My colleague gets her pens from a competitor and hers arrive in a plain envelope, warm, with no tips included. She pays more. I've stopped telling her. Five stars.
Helpful? 0 0
Dave Sullivan
October 14, 2026
Great spray
Been ordering the PT-141 spray for my research for a few months now. Always arrives sealed in a padded mailer within 2-3 days. The sprayer gives a fin...More
Been ordering the PT-141 spray for my research for a few months now. Always arrives sealed in a padded mailer within 2-3 days. The sprayer gives a fine consistent mist with no dripping. Lot number always printed on the bottle. Quality has been identical every order. No complaints.
Helpful? 0 0
David Chen
October 14, 2026
Attention to detail is unmatched
This is my third order from PrymaLab. Batch number, COA, expiration date, everything clearly labeled right on the package. Even the concentration is p...More
This is my third order from PrymaLab. Batch number, COA, expiration date, everything clearly labeled right on the package. Even the concentration is printed big and clear at 80mg/ml so there's no confusion. My previous supplier sent product in a plain baggie with zero documentation. Night and day difference.
Helpful? 0 0
Hattie Pence
October 14, 2026
The water matters more then you think
Nobody writes essays about bac water, so I'll keep this shorter then my usual, but I did want to add my two cents since I've now ordered the 10ml vial...More
Nobody writes essays about bac water, so I'll keep this shorter then my usual, but I did want to add my two cents since I've now ordered the 10ml vial six times. I reconstitute peptides for my research regularly and I've had bad luck with cheap water in the past - one bargain vial had visible particles and another arrived with the flip-top seal already popped. When water is the thing reconstituting your expensive peptides, it deserves the same scrutiny as the peptides themselves. PrymaLab's has been flawless all six times: sealed flip-top, pristine stopper, crystal clear water, and a proper printed label with the benzyl alcohol content and expiration date. The stopper holds up to weeks of punctures without coring. The 10ml size is the smart buy if you reconstitute often. Shipping is always 2-3 days. It's just water, but it's water done right, and that's why I keep coming back.
Helpful? 0 0
Alan Pierce
October 13, 2026
Convenient format
The spray format is so much more convenient for my GH research than the vial-and-syringe routine I used to do. The bottle arrives sealed with a tamper...More
The spray format is so much more convenient for my GH research than the vial-and-syringe routine I used to do. The bottle arrives sealed with a tamper cap, the batch number is printed on the label, and the mist is fine and even. Shipping was 2 days. Second order and both have been flawless.
Helpful? 0 0
1 2 ... 34

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Same-day shipping before 12 PM ET, free in the US over $100, and a published lot certificate with every vial.

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