PeptiSlim reviews
PeptiSlim reviews: 74 independent lab tests across 6 products, with a mixed lab record.
Written by the Peptide Vendor Reviews editorial team
Is PeptiSlim legit? Lab record: Mixed
How we rate- 74 independent tests
- 58 of 73 lots filled to label
- Median purity 99.8%
- 2 of 6 products graded D or E
Some of PeptiSlim's products graded D or E. The shops below tested A or B for the same peptides.
Better-tested Cagrilintide
PeptiSlim graded E. Shanghai Baoju's Cagrilintide graded A across 5 tests.
Buy from Shanghai BaojuAll better-tested optionsPeptide Vendor Reviews independently tests products and verifies reviews. Public methodology, no pay-to-rank.
Better-tested options
Where PeptiSlim 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.
Cagrilintide
PeptiSlim: grade ETesamorelin
PeptiSlim: grade EPeptiSlim 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 PeptiSlim's site.
- TirzepatideAGREAT
- Tests
- 32
- Passed
- 90.6%
- RetatrutideBGOOD
- Tests
- 26
- Passed
- 88.5%
- GHK-CuBGOOD
- Tests
- 6
- Passed
- 83.3%
- SemaglutideCOKAY
- Tests
- 4
- Passed
- 75.0%
- TesamorelinEBAD
- Tests
- 4
- Passed
- 25.0%
- CagrilintideEBAD
- Tests
- 2
- Passed
- 50.0%
What the testing shows
Across 73 measured samples from PeptiSlim, 15 came in more than 5% under the quantity on the label (21%). Another 33 measured more than 5% over. Purity across 73 readings ran from 98.19% to 99.95%, median 99.8%. Samples span Aug 2025 to Sep 2026.
- Under label
- 15/73
- Median purity
- 99.8%
- Latest sample
- Sep 2026
- Ships from
- United States
more than 5% short
98.19%–99.95% range
first tested Aug 2025
per vendor listing
Our read on PeptiSlim
62 of PeptiSlim's 74 graded samples passed (84%), and 100% of all samples were sent in by buyers rather than by the shop.
Results are improving: 96% passed over the latest six months, up from 77% before.
When a sample failed, the most common reason was purity under 99.5% (9 times).
1 sample failed identity, meaning the lab could not confirm the vial held the labelled peptide.
Against the 302 shops with at least five graded tests, PeptiSlim's pass rate is at or above 80% of them, and it has more tests on record than 85% of them.
When and how PeptiSlim was tested
Samples per month. The darker part of each bar failed.
- Labs used
- Krause Analytical (48), BTLabs (24), Chromate (1), Freedom Diagnostics (1)
- Who sent the samples
- buyers 100%
- Batches covered
- 48 distinct batch numbers; 6 checked for endotoxins
Why PeptiSlim's failed samples failed
The 6 most recent failed tests, with the lab's reason.
Tesamorelin · Jul 14, 2026
purity under 99.5%
Tirzepatide · Mar 4, 2026
purity under 99.5%
Tirzepatide · Feb 20, 2026
amount in the vial more than 35% off the label
Retatrutide · Feb 18, 2026
purity under 99.5%
Tesamorelin · Feb 18, 2026
purity under 99.5%
GHK-Cu · Feb 4, 2026
purity under 99.5%
Lab testing results
Independent results across 6 products.
Individual lab tests
Date
9/5/2026
Purity
99.9%
Quantity
30 mg → 32.1 mg
Lab
BTLabs
Vial
White label / Silver crimp / Gray cap
Date
8/28/2026
Purity
99.9%
Quantity
60 mg → 65.2 mg
Lab
BTLabs
Vial
White label / Copper crimp / Clear cap
Date
8/28/2026
Purity
99.8%
Quantity
30 mg → 34.3 mg
Lab
BTLabs
Vial
White label / Silver crimp / Green cap
Date
7/21/2026
Purity
99.9%
Quantity
10 mg → 9.94 mg
Lab
Krause Analytical
Vial
Silver label / Silver crimp / Clear Green cap
| Product | Date | Score | Purity | Quantity | Lab | COA |
|---|---|---|---|---|---|---|
| TirzepatideWhite label / Silver crimp / Gray cap | 9/5/2026 | 10.0 | 99.9% | 30 mg → 32.1 mg | BTLabs | View |
| TirzepatideWhite label / Copper crimp / Clear cap | 8/28/2026 | 10.0 | 99.9% | 60 mg → 65.2 mg | BTLabs | View |
| TirzepatideWhite label / Silver crimp / Green cap | 8/28/2026 | 10.0 | 99.8% | 30 mg → 34.3 mg | BTLabs | View |
| TirzepatideSilver label / Silver crimp / Clear Green cap | 7/21/2026 | 10.0 | 99.9% | 10 mg → 9.94 mg | Krause Analytical | View |
| Tirzepatide | 7/21/2026 | 10.0 | 99.9% | 10 mg → 9.26 mg | Krause Analytical | View |
Which PeptiSlim products tested best
Tirzepatide, Retatrutide and GHK-Cu have the strongest record, graded A or B.
Semaglutide graded C.
Cagrilintide and Tesamorelin graded D or E: a large share of their samples missed purity or quantity thresholds.
Buying from PeptiSlim
If you order from PeptiSlim, the A- and B-graded products are the safer picks on this record. For the weaker ones, the better-tested options on this page come from other shops.
We don't track PeptiSlim's prices yet. Shipping, payment and refund terms are on their site.
The official store is www.elitepeptide66.com/ https://www.facebook.com/profile.php. 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 PeptiSlim
Create a free account to save this vendor, get alerts for new lab tests, and watch price changes.
PeptiSlim: common questions
Is PeptiSlim legit?
We rate lab records, not businesses. Mixed lab record: 74 independent tests, 58 of 73 lots filled to label, median purity 99.8%, 2 of 6 products graded D or E. Each result links to its original certificate in the table above.
What do PeptiSlim reviews say?
We don't hold scored customer reviews for PeptiSlim yet. The independent lab results on this page are the evidence we have.
Which PeptiSlim peptides tested best?
We have graded 6 PeptiSlim products. Tirzepatide, Retatrutide and GHK-Cu graded A or B. Cagrilintide and Tesamorelin graded D or E.
Is there a PeptiSlim coupon code?
We don't have a verified PeptiSlim coupon code. A discount changes the price, not what is in the vial.
Where does PeptiSlim ship from?
Public listings place PeptiSlim's shipping origin in United States. Check the shop's own shipping page before ordering, as origin can change.
Ordering from PeptiSlim?
Mixed lab record: 74 independent tests, 58 of 73 lots filled to label, median purity 99.8%, 2 of 6 products graded D or E.