VertexBio reviews
VertexBio reviews: 11 independent lab tests across 1 product, with a mixed lab record.
Written by the Peptide Vendor Reviews editorial team
Is VertexBio legit? Lab record: Mixed
How we rate- 11 independent tests
- 0 of 4 lots filled to label
- Median purity 99.05%
- 1 of 1 product graded D or E
Some of VertexBio's products graded D or E. The shops below tested A or B for the same peptides.
Better-tested Retatrutide
VertexBio graded E. Paradigm Peptide's Retatrutide graded A across 8 tests, $10.00 / mg.
Buy from Paradigm PeptideAll better-tested optionsPeptide Vendor Reviews independently tests products and verifies reviews. Public methodology, no pay-to-rank.
Better-tested options
Where VertexBio graded D or E, these shops' samples of the same peptide graded A or B. Ordered by grade, then price per mg. Partner status never changes the order.
Retatrutide
VertexBio: grade EVertexBio 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 VertexBio's site.
- RetatrutideEBAD
- Tests
- 11
- Passed
- 20.0%
What the testing shows
Across 4 measured samples from VertexBio, 4 came in more than 5% under the quantity on the label (100%). Purity across 4 readings ran from 91.58% to 99.9%, median 99.05%. Samples span Jun 2026 to Sep 2026.
- Under label
- 4/4
- Median purity
- 99.05%
- Latest sample
- Sep 2026
more than 5% short
91.58%–99.9% range
first tested Jun 2026
Our read on VertexBio
2 of VertexBio's 10 graded samples passed (20%), 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 (6 times).
Against the 302 shops with at least five graded tests, VertexBio's pass rate is at or above 4% of them, and it has more tests on record than 35% of them.
When and how VertexBio was tested
Samples per month. The darker part of each bar failed.
- Labs used
- Krause Analytical (6), BTLabs (4), Ichor Life Sciences (1)
- Who sent the samples
- buyers 100%
- Batches covered
- 4 distinct batch numbers; 5 checked for endotoxins
Why VertexBio's failed samples failed
The 6 most recent failed tests, with the lab's reason.
Retatrutide · Sep 16, 2026
purity under 99.5%
Retatrutide · Aug 18, 2026
the lab could not confirm it was the labelled peptide
Retatrutide · Aug 12, 2026
the lab could not confirm it was the labelled peptide
Retatrutide · Aug 4, 2026
purity under 99.5%
Retatrutide · Aug 3, 2026
the lab could not confirm it was the labelled peptide
Retatrutide · Jul 9, 2026
the lab could not confirm it was the labelled peptide
Lab testing results
Independent results across 1 product.
Individual lab tests
Date
9/23/2026
Purity
99.9%
Quantity
5 mg → 4.2 mg
Lab
Krause Analytical
Vial
No label / Silver crimp / Red cap
Date
9/16/2026
Purity
91.58%
Quantity
15 mg → 10.6227 mg
Lab
Ichor Life Sciences
Vial
White label / Silver crimp / Clear cap
Date
8/26/2026
Purity
99.9%
Quantity
40 mg → 32.4 mg
Lab
Krause Analytical
Vial
No label / Silver crimp / Clear Blue cap
Date
8/12/2026
Purity
—
Quantity
—
Lab
Krause Analytical
Vial
No label / Copper crimp / White cap
| Product | Date | Score | Purity | Quantity | Lab | COA |
|---|---|---|---|---|---|---|
| RetatrutideNo label / Silver crimp / Red cap | 9/23/2026 | 10.0 | 99.9% | 5 mg → 4.2 mg | Krause Analytical | View |
| RetatrutideWhite label / Silver crimp / Clear cap | 9/16/2026 | 9.2 | 91.58% | 15 mg → 10.6227 mg | Ichor Life Sciences | View |
| RetatrutideNo label / Silver crimp / Clear Blue cap | 8/26/2026 | 10.0 | 99.9% | 40 mg → 32.4 mg | Krause Analytical | View |
| Retatrutide | 8/18/2026 | — | — | BTLabs | View | |
| RetatrutideNo label / Copper crimp / White cap | 8/12/2026 | — | — | Krause Analytical | View |
Which VertexBio products tested best
Retatrutide graded D or E: a large share of its samples missed purity or quantity thresholds.
Buying from VertexBio
We don't track VertexBio's prices yet. Shipping, payment and refund terms are on their site.
The official store is www.vertexbio.org. 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 VertexBio
Create a free account to save this vendor, get alerts for new lab tests, and watch price changes.
VertexBio: common questions
Is VertexBio legit?
We rate lab records, not businesses. Mixed lab record: 11 independent tests, 0 of 4 lots filled to label, median purity 99.05%, 1 of 1 product graded D or E. Each result links to its original certificate in the table above.
What do VertexBio reviews say?
We don't hold scored customer reviews for VertexBio yet. The independent lab results on this page are the evidence we have.
Which VertexBio peptides tested best?
We have graded 1 VertexBio product. Retatrutide graded D or E.
Is there a VertexBio coupon code?
We don't have a verified VertexBio coupon code. A discount changes the price, not what is in the vial.
Ordering from VertexBio?
Mixed lab record: 11 independent tests, 0 of 4 lots filled to label, median purity 99.05%, 1 of 1 product graded D or E.