Maddox Research reviews
Maddox Research reviews: 5 independent lab tests across 1 product, with a limited lab record.
Written by the Peptide Vendor Reviews editorial team
Is Maddox Research legit? Lab record: Limited
How we rate- 5 independent tests
- 1 of 4 lots filled to label
- Median purity 99.9%
- Its tested product graded C or better
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5 independent COAs · not paid-to-rank · 3 of 4 lots under label
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Maddox 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 Maddox Research's site.
- RetatrutideBGOOD
- Tests
- 5
- Passed
- 80.0%
What the testing shows
Across 4 measured samples from Maddox Research, 3 came in more than 5% under the quantity on the label (75%). Purity across 4 readings ran from 99.7% to 99.9%, median 99.9%. Samples span Mar 2026 to Jul 2026.
- Under label
- 3/4
- Median purity
- 99.9%
- Latest sample
- Jul 2026
more than 5% short
99.7%–99.9% range
first tested Mar 2026
Our read on Maddox Research
4 of Maddox Research's 5 graded samples passed (80%), and 100% of all samples were sent in by buyers rather than by the shop.
When a sample failed, the most common reason was the lab could not confirm it was the labelled peptide (1 time).
Against the 302 shops with at least five graded tests, Maddox Research's pass rate is at or above 69% of them, and it has more tests on record than 0% of them.
When and how Maddox Research was tested
Samples per month. The darker part of each bar failed.
- Labs used
- Krause Analytical (4), BTLabs (1)
- Who sent the samples
- buyers 100%
- Batches covered
- 4 distinct batch numbers; 1 checked for endotoxins
Why Maddox Research's failed samples failed
The only failed test, with the lab's reason.
Retatrutide · May 6, 2026
the lab could not confirm it was the labelled peptide
Lab testing results
Independent results across 1 product.
Individual lab tests
Date
7/1/2026
Purity
99.9%
Quantity
10 mg → 9.31 mg
Lab
Krause Analytical
Vial
No label / Silver crimp / Clear Blue cap
Date
6/6/2026
Purity
99.7%
Quantity
10 mg → 10.4 mg
Lab
BTLabs
Vial
White label / Silver crimp / Clear Blue cap
Date
6/1/2026
Purity
99.9%
Quantity
20 mg → 15.5 mg
Lab
Krause Analytical
Vial
No label / Silver crimp / Violet cap
Date
5/6/2026
Purity
—
Quantity
—
Lab
Krause Analytical
Vial
White Label / Silver Crimp / Clear Blue Cap
Date
3/19/2026
Purity
99.9%
Quantity
10 mg → 9.44 mg
Lab
Krause Analytical
Vial
No Label / Silver Crimp / Clear Blue Cap
| Product | Date | Score | Purity | Quantity | Lab | COA |
|---|---|---|---|---|---|---|
| RetatrutideNo label / Silver crimp / Clear Blue cap | 7/1/2026 | 10.0 | 99.9% | 10 mg → 9.31 mg | Krause Analytical | View |
| RetatrutideWhite label / Silver crimp / Clear Blue cap | 6/6/2026 | 10.0 | 99.7% | 10 mg → 10.4 mg | BTLabs | View |
| RetatrutideNo label / Silver crimp / Violet cap | 6/1/2026 | 10.0 | 99.9% | 20 mg → 15.5 mg | Krause Analytical | View |
| RetatrutideWhite Label / Silver Crimp / Clear Blue Cap | 5/6/2026 | — | — | Krause Analytical | View | |
| RetatrutideNo Label / Silver Crimp / Clear Blue Cap | 3/19/2026 | 10.0 | 99.9% | 10 mg → 9.44 mg | Krause Analytical | View |
Which Maddox Research products tested best
Retatrutide has the strongest record, graded A or B.
Buying from Maddox Research
If you order from Maddox Research, start with the graded products in the table: each one links straight to the shop.
We don't track Maddox Research's prices yet. Shipping, payment and refund terms are on their site.
The official store is www.instagram.com/maddoxresearch/ https://mdxresearch.deals/order. 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 Maddox Research
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Maddox Research: common questions
Is Maddox Research legit?
We rate lab records, not businesses. Limited lab record: 5 independent tests, 1 of 4 lots filled to label, median purity 99.9%, its tested product graded C or better. Each result links to its original certificate in the table above.
What do Maddox Research reviews say?
We don't hold scored customer reviews for Maddox Research yet. The independent lab results on this page are the evidence we have.
Which Maddox Research peptides tested best?
We have graded 1 Maddox Research product. Retatrutide graded A or B.
Is there a Maddox Research coupon code?
We don't have a verified Maddox Research coupon code. A discount changes the price, not what is in the vial.
Ordering from Maddox Research?
Limited lab record: 5 independent tests, 1 of 4 lots filled to label, median purity 99.9%, its tested product graded C or better.