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U.S. research supply
Excalibur Peptides — U.S.-Based Research Peptide Supplier
HPLC verified research peptides offering premium quality backed by third-party testing, ≥99% purity, and complete Certificate of Analysis (COA) transparency.
Every batch is freshly produced, flash-frozen, and cold-stored at -10°F before being vacuum-sealed and shipped with care in 2–4 business days.
Trusted by researchers who value quality, consistency, and uncompromising standards.
For in-vitro laboratory research use only. Not for human or veterinary use.
3rd-party
HPLC verification
U.S.
domestic shipping
COA
lot documentation
Testing
HPLC purity analysis and ESI mass spectrometry on every batch
Verified Lots
Lot-specifi COA with compound name, lot number, purity %, molecular weight, and method
Fast Dispatch
Same day processing on order before 2pm EST. 2-4 day domestic delivery
Research Only
Shop Research Peptides
Click through to view product details, pricing, and research specifications for each compound.
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Sale!
GLP-3 R —10mg Research Peptide
Original price was: $152.00.$129.90Current price is: $129.90. Add to cart -
Advanced GLP Research Bundle
$289.97 Add to cart -
Cellular Repair Research Bundle
$289.97 Add to cart -
GLP Signaling Research Bundle
$289.97 Add to cart -
Mitochondrial Energy Research Bundle
$209.97 Add to cart -
GH Axis Research Bundle
$189.97 Add to cart -
Sale!
TB-500 — 10mg Research Peptide
Original price was: $93.98.$89.99Current price is: $89.99. Add to cart -
Sale!
NAD+ — 500mg Research Peptide
Original price was: $56.22.$49.99Current price is: $49.99. Add to cart
Leading Research Peptide Supplier blue. in the USA
99%+ HPLC-verified purity
Third-party tested compounds
Fastest domestic shipping
Trusted by laboratories nationwide
Best Sellers: GLP-3R, Wolverine Blend, Tesamorelin
Research Bundles
Curated multi-compound bundles designed for comprehensive pathway research. Each bundle pairs complementary peptides for synergistic study.
GLP-3 R —10mg Research Peptide
Triple-agonist peptide targeting GIP, GLP-1, and glucagon receptors — a novel class of compound for advanced metabolic pathway research.
>99% pure, third-party tested with independent COA. Fast domestic USA shipping — discreet packaging, no customs delays. For in-vitro laboratory research use only.
Molecular Weight: ~4,500 g/mol
Original price was: $152.00.$129.90Current price is: $129.90.
Bundle Total
Advanced GLP Research Bundle
Premium metabolic pathway research bundle combining GHRH analog with triple-agonist peptide and mitochondrial signaling compound.
Includes:
- Tesamorelin — 10mg
- GLP-3 R — 10mg
- MOTS-C — 10mg
$289.97
Bundle Total
Cellular Repair Research Bundle
Multi-pathway cellular research bundle featuring four-peptide complex, essential coenzyme, and mitochondrial-derived peptide.
Includes:
- KLOW Blend — 10/10/50mg
- NAD+ — 500mg
- MOTS-C — 10mg
$289.97
Bundle Total
GLP Signaling Research Bundle
Advanced incretin receptor research bundle featuring dual and triple agonist peptides paired with mitochondrial-derived signaling compound.
Includes:
- GLP-3 R — 10mg
- GLP-2 T — 10mg
- MOTS-C — 10mg
$289.97
Bundle Total
Mitochondrial Energy Research Bundle
Multi-compound bundle targeting mitochondrial signaling, AMPK activation, and NAD+-dependent enzymatic pathway research.
Includes:
- Tesamorelin — 10mg
- MOTS-C — 10mg
- NAD+ — 500mg
$209.97
Bundle Total
GH Axis Research Bundle
A comprehensive bundle for growth hormone axis signaling pathway research combining GHRH analog, GHS-R1a agonist, and tissue-protective peptide.
Includes:
- Tesamorelin — 10mg
- GHRP-6 — 5mg
- BPC-157 — 10mg
$189.97
Bundle Total
Trusted by Researchers Nationwide
Verified, third-party reviews from researchers on Trustpilot.
Rated 4.7 out of 5 from 32 verified reviews on Trustpilot
Research Peptides Catalog
Browse our full range of high-quality peptides for research. Every batch is independently third-party tested for purity and identity. U.S.-based, third-party-tested peptide supplier.
Tissue Research Peptides
BPC-157, TB-500, Wolverine Blend, KLOW Blend, GHK-Cu — compounds studied for signaling pathways in preclinical models.
Metabolic Research Peptides
GLP-2T, GLP-3R — dual and triple receptor agonists for incretin and glucagon pathway studies.
Growth Hormone Peptides
GHRP-6, Tesamorelin — GHRH analogs and GHS receptor ligands for growth hormone secretion research.
Cellular Research Compounds
NAD+, MOTS-c — mitochondrial-derived peptides and coenzymes for AMPK and sirtuin pathway research.
Third-Party Tested Peptide Supplier — Uncompromising Quality
As a third-party tested peptide supplier, our commitment to quality sets us apart. Every peptide is rigorously verified before it leaves our facility.
99%+ Purity
Every peptide is HPLC-tested and verified to exceed 99% purity standards.
Mass Spec Verified
Full mass spectrometry analysis confirms molecular identity on each batch.
Precision Synthesized
Manufactured with strict quality control protocols and pharmaceutical-grade raw materials.
Fast Shipping
Same-day processing with temperature-controlled shipping nationwide.
Frequently asked questions
How do I verify a peptide Certificate of Analysis?
Check that the COA references the exact lot number printed on your vial, names the independent testing laboratory, and reports both HPLC purity (≥99%) and a mass-spectrometry identity match against the calculated molecular weight. A generic or undated COA that is not lot-specific should not be accepted as batch verification.
What does HPLC purity testing measure?
High-Performance Liquid Chromatography separates the components of a peptide sample and quantifies each peak. The purity percentage on a COA is the area of the target-peptide peak as a fraction of all detected peaks — measuring how much of the sample is the intended sequence versus truncated peptides, deletion sequences, or synthesis byproducts.
What is mass spectrometry identity confirmation?
Mass spectrometry (typically LC-MS with electrospray ionization) measures the molecular weight of the peptide in the vial. Identity is confirmed when the observed mass matches the theoretical molecular weight calculated from the peptide’s amino-acid sequence. Purity without identity confirmation is not sufficient — both tests are required to verify a batch.
How are research peptides shipped and stored?
Lyophilized (freeze-dried) peptides ship in sealed glass vials with temperature-controlled domestic delivery in 2–4 business days. Unopened lyophilized vials are stored refrigerated (2–8 °C) or frozen (−20 °C) for long-term storage. Once reconstituted, peptides are refrigerated and used within the timeframe specified by the research protocol.
What does "research use only" mean?
“For in-vitro laboratory research use only” means the compound is sold strictly for non-clinical scientific study in laboratory environments. It is not a drug, not approved by the FDA for human or veterinary use, and is not intended for human or animal consumption, injection, or therapeutic application.