In stock10-pack
Royal Peptides Reviews
Royal Peptides review: 34 independent lab tests across 3 products, with a mixed lab record.
Written by the Peptide Vendor Reviews editorial team
Is Royal Peptides legit? Lab record: Mixed
How we rate- 34 independent tests
- 30 of 34 lots filled to label
- Median purity 99.8%
- 1 of 3 products graded D or E
Some of Royal Peptides's products graded D or E. The shops below tested A or B for the same peptides.
Better-tested Retatrutide
Royal Peptides graded D. 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 Royal Peptides 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
Royal Peptides: grade DRoyal Peptides 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 Royal Peptides' site.
- TirzepatideBGOOD
- Tests
- 11
- Passed
- 81.8%
- Price/mg
- $3.75 / mg
- SemaglutideBGOOD
- Tests
- 8
- Passed
- 87.5%
- Price/mg
- $2.00 / mg
- RetatrutideDPOOR
- Tests
- 15
- Passed
- 60.0%
- Price/mg
- $5.40 / mg
What the testing shows
Across 34 measured samples from Royal Peptides, 4 came in more than 5% under the quantity on the label (12%). Another 19 measured more than 5% over. Purity across 34 readings ran from 98.78% to 99.98%, median 99.8%. Samples span Mar 2025 to Aug 2026.
- Under label
- 4/34
- Median purity
- 99.8%
- Latest sample
- Aug 2026
- Ships from
- United States
more than 5% short
98.78%–99.98% range
first tested Mar 2025
per vendor listing
Our read on Royal Peptides
25 of Royal Peptides' 34 graded samples passed (74%), and 47% of all samples were sent in by buyers rather than by the shop.
Results are improving: 100% passed over the latest six months, up from 68% before.
When a sample failed, the most common reason was purity under 99.5% (8 times).
Against the 302 shops with at least five graded tests, Royal Peptides' pass rate is at or above 54% of them, and it has more tests on record than 67% of them.
When and how Royal Peptides was tested
Samples per month. The darker part of each bar failed.
Mar '25
Aug '25
Oct '25
Dec '25
Jan '26
Feb '26
Mar '26
Jul '26
Aug '26
- Labs used
- Krause Analytical (11), Chromate (10), TrustPointe (9), BTLabs (4)
- Who sent the samples
- buyers 47%, testing programme 53%
- Batches covered
- 8 distinct batch numbers; 3 checked for endotoxins
Why Royal Peptides' failed samples failed
The 6 most recent failed tests, with the lab's reason.
Retatrutide · Feb 22, 2026
purity under 99.5%
Retatrutide · Jan 29, 2026
amount in the vial more than 35% off the label
Retatrutide · Oct 21, 2025
purity under 99.5%
Semaglutide · Aug 3, 2025
purity under 99.5%
Retatrutide · Mar 26, 2025
purity under 99.5%
Retatrutide · Mar 26, 2025
purity under 99.5%
Catalog & prices
Every peptide and vial size Royal Peptides currently sells. Prices refresh weekly.
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Showing 1–24 of 104 productsPrices refreshed weekly · Direct from Royal Peptides
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Lab testing results
Independent results across 3 products.
34
Total lab tests
99.7%
Avg purity
100.0%
Best score
98.8%
Worst score
Individual lab tests
Tirzepatide10.0
Date
8/25/2026
Purity
99.9%
Quantity
60 mg → 70.9 mg
Lab
BTLabs
Vial
No label / Silver crimp / Clear Green cap
Semaglutide10.0
Date
7/23/2026
Purity
99.9%
Quantity
20 mg → 21.6 mg
Lab
Krause Analytical
Vial
No label / Silver crimp / Violet cap
Retatrutide10.0
Date
7/1/2026
Purity
99.9%
Quantity
20 mg → 17.9 mg
Lab
Krause Analytical
Vial
No label / Silver crimp / Blue cap
Retatrutide10.0
Date
3/13/2026
Purity
99.8%
Quantity
15 mg → 14.6 mg
Lab
BTLabs
Vial
No Label / Copper Crimp / Clear Cap
Tirzepatide10.0
Date
3/3/2026
Purity
99.7%
Quantity
10 mg → 9.8 mg
Lab
BTLabs
Vial
No Label / Silver Crimp / Yellow Cap
| Product | Date | Score | Purity | Quantity | Lab | COA |
|---|---|---|---|---|---|---|
| TirzepatideNo label / Silver crimp / Clear Green cap | 8/25/2026 | 10.0 | 99.9% | 60 mg → 70.9 mg | BTLabs | View |
| SemaglutideNo label / Silver crimp / Violet cap | 7/23/2026 | 10.0 | 99.9% | 20 mg → 21.6 mg | Krause Analytical | View |
| RetatrutideNo label / Silver crimp / Blue cap | 7/1/2026 | 10.0 | 99.9% | 20 mg → 17.9 mg | Krause Analytical | View |
| RetatrutideNo Label / Copper Crimp / Clear Cap | 3/13/2026 | 10.0 | 99.8% | 15 mg → 14.6 mg | BTLabs | View |
| TirzepatideNo Label / Silver Crimp / Yellow Cap | 3/3/2026 | 10.0 | 99.7% | 10 mg → 9.8 mg | BTLabs | View |
Which Royal Peptides products tested best
Semaglutide and Tirzepatide have the strongest record, graded A or B.
Retatrutide graded D or E: a large share of its samples missed purity or quantity thresholds.
Buying from Royal Peptides
If you order from Royal Peptides, 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 track 104 listings from Royal Peptides with current prices, so you can compare price per mg before you buy.
The official store is royal-peptides.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 Royal Peptides
Create a free account to save this vendor, get alerts for new lab tests, and watch price changes.
Royal Peptides: common questions
Is Royal Peptides legit?
We rate lab records, not businesses. Mixed lab record: 34 independent tests, 30 of 34 lots filled to label, median purity 99.8%, 1 of 3 products graded D or E. Each result links to its original certificate in the table above.
What do Royal Peptides reviews say?
We don't hold scored customer reviews for Royal Peptides yet. The independent lab results on this page are the evidence we have.
Which Royal Peptides peptides tested best?
We have graded 3 Royal Peptides products. Semaglutide and Tirzepatide graded A or B. Retatrutide graded D or E.
Is there a Royal Peptides coupon code?
We don't have a verified Royal Peptides coupon code. A discount changes the price, not what is in the vial, so compare price per mg in the catalog above.
Where does Royal Peptides ship from?
Public listings place Royal Peptides's shipping origin in United States. Check the shop's own shipping page before ordering, as origin can change.
Ordering from Royal Peptides?
Mixed lab record: 34 independent tests, 30 of 34 lots filled to label, median purity 99.8%, 1 of 3 products graded D or E.