LabSourced Coupon Code: PROFPEPTIDE — Up to 46% Off
The current LabSourced (labsourced.com) discount code is PROFPEPTIDE, for 10% off your order. Prof. Peptide verifies this code directly with the vendor and updates it when it changes.
PROFPEPTIDE stacks on LabSourced’s sitewide 40% Pre-Black Friday sale, which applies automatically, for a further 10% off the sale price: 46% off the regular price, tested at checkout.
Key facts
- Catalog
- Research peptides and blends in vials, many under LabSourced's own product codes, plus bacteriostatic water and acetic acid
- Third-party testing
- Vanguard Laboratory & ILS Laboratories
- Certificates of analysis
- A COA page with batch certificates from Vanguard Laboratory and, for newer lots, ILS Laboratories
- Prof. Peptide’s discount
- 10% off with code PROFPEPTIDE
- Code checked
- Prof. Peptide confirmed this rate in a cart test.
Overview
LabSourced sells research peptides and blends for laboratory research use only, and runs a wholesale Partner Program with kit pricing, private labeling and fulfillment for businesses.
LabSourced catalog & prices
LabSourced lists 73 compounds, grouped below by Prof. Peptide's research-library categories. Several are sold under LabSourced's own product names: Peptide-R, Peptide-T, PEP-RT, PEP-CAG, MTP-31 and a Mito blend.
- Metabolic & GLP-1
- Peptide-R, Peptide-T, PEP-RT and PEP-CAG (LabSourced's own product names), Cagrilintide, MOTS-C, 5-Amino-1MQ, AOD-9604, AICAR, Lipo-C, L-Carnitine
- Growth Hormone
- Tesamorelin, CJC-1295 + Ipamorelin, GHRP-2
- Longevity
- NAD+, Epithalon, FOXO4, Humanin, Thymalin, Thymosin Alpha-1, Cartalax, PNC-27, MTP-31 and the Mito blend (LabSourced's own product names)
- Sexual Health
- PT-141, Kisspeptin, HCG
- Supplies
- Bacteriostatic water and acetic acid
Testing: Labs & Certificates of Analysis
LabSourced's COA page publishes batch certificates from Vanguard Laboratory and, for newer lots, ILS Laboratories. LabSourced says every batch is tested by independent third-party laboratories for identity and purity.
Prof. Peptide looked up three of the Vanguard certificates at Vanguard Laboratory's own records, KPV 10 mg, Semax 10 mg and Epithalon 10 mg, and each was issued for LabSourced and matched LabSourced's copy. Those three certificates' results are below.
Prof. Peptide Verification
Verified · November 12, 2026
Prof. Peptide identified the lab, matched the certificates on its own website, and read every test result.
Lab identified
PassedCertificates verified
Passed3 of 3 matched on Vanguard Laboratory’s own website.
The three certificates were tested on March 17, March 26 and April 11, 2026.
Epithalon 10 mg · lot LS-EPT103.3.2026
PassedVanguard Laboratory · tested March 17, 2026 · certificate V260309-9 005
- Passed: Chromatographic Purity (HPLC), three vials — 99.01% / 99.19% / 99.08% (against ≥98%, Prof. Peptide’s standard; the certificate prints no specification)
- Passed: Quantity, three vials — 11.12 / 11.05 / 10.79 mg (at least 90% of the labeled 10 mg)
KPV 10 mg · lot LS-KPV102.V.2026
PassedVanguard Laboratory · tested April 11, 2026 · certificate V260211-4 016
- Passed: Chromatographic Purity (HPLC), three vials — >99.80% (all three) (against ≥98%, Prof. Peptide’s standard; the certificate prints no specification)
- Passed: Quantity, three vials — 11.05 / 11.32 / 11.17 mg (at least 90% of the labeled 10 mg)
- Passed: Endotoxin — Pass (spec <5.00 EU/mg)
- Passed: Heavy metals — Not detected (a clear negative, as printed)
Semax 10 mg · lot LS-XA103.10.2026
PassedVanguard Laboratory · tested March 26, 2026 · certificate V260316-15 001
- Passed: Chromatographic Purity (HPLC), three vials — 99.08% / 99.06% / 99.01% (against ≥98%, Prof. Peptide’s standard; the certificate prints no specification)
- Passed: Quantity, three vials — 10.68 / 10.23 / 10.43 mg (at least 90% of the labeled 10 mg)
All products are sold for laboratory research use only.
Who tests LabSourced’s peptides?
Vanguard Laboratory
- Location
- 2635 Parkmont Ln SW, Suite A, Olympia, Washington 98502, USA.
- What its certificates report
- Tests reported on the certificates Prof. Peptide has matched at Vanguard Laboratory, across vendors: Purity (HPLC) · Net peptide content · Quantity per unit (HPLC) · Identity · Fentanyl screen · Heavy metals (ICP-MS) · Sterility (culture screen) · Endotoxin (USP <85>) · Endotoxin (method not printed)
- Accreditation
- Claimed by the lab: The lab’s About page states “Our ISO/IEC 17025:2017 accreditation is listed by A2LA under certificate 6377”, and that the accreditation applies to the specific tests and matrices in the published scope.Accreditation body directories: A2LA: record confirmed.Scope covers peptide purity or identity: no.
- How certificates are checked at the lab
- A QR code and the “Verify a COA” search on the Verified by Vanguard hub. Each client chooses public search, link only, password protected or unpublished, so a report missing from public search may still exist.
- What Prof. Peptide checked for LabSourced
- Prof. Peptide matched 3 certificates at Vanguard Laboratory’s own lookup; the lab’s records name LabSourced as the client.
ILS Laboratories
- Location
- 8222 Vickers St STE 106, San Diego, California 92111, USA.
- What its certificates report
- Tests reported on the certificates Prof. Peptide has matched at ILS Laboratories, across vendors: Purity (HPLC) · Net peptide content · Identity · Appearance · Fentanyl screen · HPLC conformity · Heavy metals (ICP-MS) · Sterility (PCR) · Endotoxin (USP <85>) · Endotoxin (method not printed)
- Accreditation
- Claimed by the lab: A site-wide badge reads “ISO 17025 Accredited Laboratory”, and the services page says “ISO/IEC 17025 accredited for activities within our accredited scope”. No accreditation body or certificate number is named on the pages read.Accreditation body directories: A2LA: searched, no record found.
- How certificates are checked at the lab
- Each certificate carries a QR code and a 7–8 character access code, entered at ils-lab.com/verify or reached by scanning the QR; no login. Released results cannot be altered.
Payment and shipping
LabSourced ships within the United States only. It processes orders within 1 to 3 business days after payment, and transit usually takes 2 to 5 business days, with tracking.
All sales are final. LabSourced replaces a damaged, incorrect or incomplete order reported within 7 days of delivery to customerservice@labsourced.com with the order number and photos.
Customer service
LabSourced takes questions by email at customerservice@labsourced.com and through the contact form on its site, Monday to Friday from 9 AM to 5 PM Pacific, and responds within 24 hours.
Research-use terms
- On its site
- A banner on every page marks LabSourced's products for research use only, not for human or animal use and not for use in diagnostic procedures. Its disclaimer describes them as sold strictly for in vitro research and laboratory use, to be handled only by qualified and licensed professionals.
- When buying
- By purchasing, the buyer confirms being at least 21, a qualified research professional, licensed scientist or member of a legitimate research institution, and that the products will be used only for in vitro laboratory research and not administered to humans or animals.
- Terms page
- labsourced.com/terms
Sources: LabSourced's own pages, labsourced.com site banner and footer, /terms and /disclaimer, read November 12, 2026.
Ratings & reviews
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Frequently Asked Questions
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Related pages
Affiliate disclosure: Prof. Peptide earns a commission on purchases and sign-ups made through its links and codes, at no extra cost to the buyer. Commissions never decide which vendors are listed, how they are ranked or verified, or what Prof. Peptide concludes.
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