Discover the best Tirzepatide vendors
We track HPLC and Mass Spec results across 192 Tirzepatide vendors so you can sort by purity, $/mg, and published lab results.
See best vendorsIndependent lab data · 200+ vendors tracked
Find research peptides from vendors ranked by independent lab tests.
Compare independent purity scores and live prices per mg across every tracked peptide source. Not sure which one you need? Start with your goal.
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Or start with a goalNot sure which fits?Answer 3 questionsEvery vendor ranked on independent lab results
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Find peptides for weight loss, muscle growth, skin and recovery
What are you trying to change? Most people know the outcome they want, not the molecule. Pick a goal and we'll show you which peptides are researched for it — and which vendors passed the lab.
Lose weight
Appetite control and fat metabolism — the GLP-1 family and its successors.
7 peptides · 715 vendor listings
Heal & recover
Tendon, ligament and soft-tissue repair after injury or hard training.
3 peptides · 387 vendor listings
Build muscle
Growth-hormone secretagogues studied for lean mass, strength and body composition.
4 peptides · 349 vendor listings
Better skin
Collagen synthesis, pigmentation and repair — the cosmetic peptides.
2 peptides · 224 vendor listings
Gut health
Intestinal lining repair and inflammation in the gut.
1 peptide · 159 vendor listings
Sexual health
Libido and arousal pathways that work through the brain, not blood flow.
2 peptides · 151 vendor listings
Still not sure which one you need?Answer 3 questions and we'll narrow it down
Methodology
How a vendor earns its score
Peptides are sold as research chemicals, which means no regulator checks what is in the vial. The only way to know is to test it. Here is what sits behind every number on this site.
We buy the vials ourselves
Samples are acquired blind, as an ordinary customer, so a vendor cannot prepare a batch for testing. Vendors do not know which order is ours.
An independent lab runs them
HPLC establishes purity as a percentage. Mass spectrometry confirms the compound matches the label. Quantity is measured against the stated dose.
Every result is published
Passes and failures both. A vendor cannot pay to remove a result or preview one before it goes up, and each score links back to the test behind it.
Prices are tracked separately
Vendor catalogs are re-checked on a schedule and normalised to price per mg, so a cheap vial of a weak compound does not read as a good deal.
Why thousands of researchers trust Boren Health.
10,005+
Independent HPLC and mass-spec tests published
313+
Vendors independently lab tested
15+
Peptides tracked with live vendor listings
We buy samples anonymously at retail and publish every result, pass or fail. Boren Health does not sell peptides.
Top picks
Best vendors for the most-researched peptides.
Find peptide vendors ranked by independent HPLC tests, mass spec results, and community reviews.
Vendor reviews
The highest-scoring vendors we test
Ranked by average purity across every published result. Each page lists the vendor’s full catalog, its test history, and live prices per mg.
- Paradigm Peptide Reviews18 published testsB
- Is Orbitrex Peptides Legit36 published testsB
- Pura Peptides Reviews11 published testsC
- Biolongevity Labs Review33 published testsC
- Penguin Peptides5 published testsC
- Is Royal Peptides Legit33 published testsC
- Peptide Partners91 published testsC
