Onyx Research reviews
Onyx Research reviews: 2 independent lab tests across 1 product, with a limited lab record.
Written by the Peptide Vendor Reviews editorial team
Is Onyx Research legit? Lab record: Limited
How we rate- 2 independent tests
- 1 of 2 lots filled to label
- Median purity 99.72%
- Its tested product graded C or better
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Vendor website
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2 independent COAs · not paid-to-rank · 1 of 2 lots under label
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Peptide Vendor Reviews independently tests products and verifies reviews. Public methodology, no pay-to-rank.
Onyx Research products we've tested
Best-graded first. Grades come from the share of each product's samples that passed purity and quantity checks. Buy links open Onyx Research's site.
- RetatrutideAGREAT
- Tests
- 2
- Passed
- 100.0%
What the testing shows
Across 2 measured samples from Onyx Research, 1 came in more than 5% under the quantity on the label (50%). Purity across 2 readings ran from 99.6% to 99.83%, median 99.72%. Samples span Dec 2025 to Mar 2026.
- Under label
- 1/2
- Median purity
- 99.72%
- Latest sample
- Mar 2026
- Ships from
- United States
more than 5% short
99.6%–99.83% range
first tested Dec 2025
per vendor listing
Our read on Onyx Research
2 of Onyx Research's 2 graded samples passed (100%), and 100% of all samples were sent in by buyers rather than by the shop.
When and how Onyx Research was tested
Samples per month. The darker part of each bar failed.
- Labs used
- Krause Analytical (1), BTLabs (1)
- Who sent the samples
- buyers 100%
- Batches covered
- 1 distinct batch numbers
Lab testing results
Independent results across 1 product.
Individual lab tests
Date
3/3/2026
Purity
99.83%
Quantity
5 mg → 4.74 mg
Lab
Krause Analytical
Vial
No Label / Silver Crimp / Violet Cap
Date
12/16/2025
Purity
99.6%
Quantity
10 mg → 9.8 mg
Lab
BTLabs
Vial
Black Label / Silver Crimp / Yellow Cap
Which Onyx Research products tested best
Retatrutide has the strongest record, graded A or B.
Buying from Onyx Research
If you order from Onyx Research, start with the graded products in the table: each one links straight to the shop.
We don't track Onyx Research's prices yet. Shipping, payment and refund terms are on their site.
The official store is onyxresearch.shop. Check the address before you pay.
What to check before you pay
- The lot number on the vial matches the certificate
- The certificate names the lab and the test date
- Fill versus label, not purity alone
- A refund policy in writing
Track Onyx Research
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Onyx Research: common questions
Is Onyx Research legit?
We rate lab records, not businesses. Limited lab record: 2 independent tests, 1 of 2 lots filled to label, median purity 99.72%, its tested product graded C or better. Each result links to its original certificate in the table above.
What do Onyx Research reviews say?
We don't hold scored customer reviews for Onyx Research yet. The independent lab results on this page are the evidence we have.
Which Onyx Research peptides tested best?
We have graded 1 Onyx Research product. Retatrutide graded A or B.
Is there a Onyx Research coupon or discount code?
We don't have a verified Onyx Research coupon or discount code. A discount changes the price, not what is in the vial.
What do people say about Onyx Research on Reddit and forums?
Forum and Reddit reports on Onyx Research vary, as they do for most shops. Posts that name a lot number can be checked against the certificates here.
Where does Onyx Research ship from?
Public listings place Onyx Research's shipping origin in United States. Check the shop's own shipping page before ordering, as origin can change.
Ordering from Onyx Research?
Limited lab record: 2 independent tests, 1 of 2 lots filled to label, median purity 99.72%, its tested product graded C or better.