Jett Labs reviews
Jett Labs reviews: 3 independent lab tests across 1 product, with a limited lab record.
Written by the Peptide Vendor Reviews editorial team
Is Jett Labs legit? Lab record: Limited
How we rate- 3 independent tests
- 3 of 3 lots filled to label
- Median purity 99.9%
- Its tested product graded C or better
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Vendor website
Visit Jett Labs
3 independent COAs · not paid-to-rank · 0 of 3 lots under label
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Peptide Vendor Reviews independently tests products and verifies reviews. Public methodology, no pay-to-rank.
Jett Labs 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 Jett Labs' site.
- RetatrutideAGREAT
- Tests
- 3
- Passed
- 100.0%
What the testing shows
Across 3 measured samples from Jett Labs, 0 came in more than 5% under the quantity on the label (0%). Purity across 3 readings ran from 99.6% to 99.9%, median 99.9%. Samples span Apr 2026 to May 2026.
- Under label
- 0/3
- Median purity
- 99.9%
- Latest sample
- May 2026
more than 5% short
99.6%–99.9% range
first tested Apr 2026
Our read on Jett Labs
3 of Jett Labs' 3 graded samples passed (100%), and 100% of all samples were sent in by buyers rather than by the shop.
When and how Jett Labs was tested
Samples per month. The darker part of each bar failed.
- Labs used
- Krause Analytical (2), BTLabs (1)
- Who sent the samples
- buyers 100%
- Batches covered
- 1 distinct batch numbers; 1 checked for endotoxins
Lab testing results
Independent results across 1 product.
Individual lab tests
Date
5/11/2026
Purity
99.9%
Quantity
10 mg → 10.2 mg
Lab
Krause Analytical
Vial
Black & Blue & White Label / Silver Crimp / Yellow Cap
Date
5/6/2026
Purity
99.9%
Quantity
10 mg → 10.5 mg
Lab
Krause Analytical
Vial
Black & Blue & White Label / Silver Crimp / Yellow Cap
Date
4/30/2026
Purity
99.6%
Quantity
10 mg → 10.3 mg
Lab
BTLabs
Vial
Black & Blue & White Label / Silver Crimp / Yellow Cap
| Product | Date | Score | Purity | Quantity | Lab | COA |
|---|---|---|---|---|---|---|
| RetatrutideBlack & Blue & White Label / Silver Crimp / Yellow Cap | 5/11/2026 | 10.0 | 99.9% | 10 mg → 10.2 mg | Krause Analytical | View |
| RetatrutideBlack & Blue & White Label / Silver Crimp / Yellow Cap | 5/6/2026 | 10.0 | 99.9% | 10 mg → 10.5 mg | Krause Analytical | View |
| RetatrutideBlack & Blue & White Label / Silver Crimp / Yellow Cap | 4/30/2026 | 10.0 | 99.6% | 10 mg → 10.3 mg | BTLabs | View |
Which Jett Labs products tested best
Retatrutide has the strongest record, graded A or B.
Buying from Jett Labs
If you order from Jett Labs, start with the graded products in the table: each one links straight to the shop.
We don't track Jett Labs' prices yet. Shipping, payment and refund terms are on their site.
The official store is jettlabs.com. 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 Jett Labs
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Jett Labs: common questions
Is Jett Labs legit?
We rate lab records, not businesses. Limited lab record: 3 independent tests, 3 of 3 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 Jett Labs reviews say?
We don't hold scored customer reviews for Jett Labs yet. The independent lab results on this page are the evidence we have.
Which Jett Labs peptides tested best?
We have graded 1 Jett Labs product. Retatrutide graded A or B.
Is there a Jett Labs coupon code?
We don't have a verified Jett Labs coupon code. A discount changes the price, not what is in the vial.
Ordering from Jett Labs?
Limited lab record: 3 independent tests, 3 of 3 lots filled to label, median purity 99.9%, its tested product graded C or better.