Is Wllybio Legit
Is Wllybio Legit? 45 independent lab tests across 6 products, with a mixed lab record.
Written by the Peptide Vendor Reviews editorial team
Lab record: Mixed
How we rate- 45 independent tests
- 26 of 42 lots filled to label
- Median purity 99.8%
- 2 of 5 products graded D or E
Some of WllyBIO's products graded D or E. The shops below tested A or B for the same peptides.
Better-tested BPC-157
WllyBIO graded E. Zenith Jove Peptide ZJ's BPC-157 graded A across 10 tests.
Buy from Zenith Jove Peptide ZJAll better-tested optionsPeptide Vendor Reviews independently tests products and verifies reviews. Public methodology, no pay-to-rank.
Better-tested options
Where WllyBIO 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.
BPC-157
WllyBIO: grade EIpamorelin
WllyBIO: grade DWllyBIO 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 WllyBIO's site.
- GHK-CuAGREAT
- Tests
- 6
- Passed
- 100.0%
- RetatrutideBGOOD
- Tests
- 16
- Passed
- 87.5%
- TirzepatideCOKAY
- Tests
- 12
- Passed
- 75.0%
- IpamorelinDPOOR
- Tests
- 3
- Passed
- 66.7%
- BPC-157EBAD
- Tests
- 5
- Passed
- 20.0%
- Tests
- 3
- Passed
- —
What the testing shows
Across 42 measured samples from WllyBIO, 16 came in more than 5% under the quantity on the label (38%). Another 8 measured more than 5% over. Purity across 42 readings ran from 47.79% to 99.95%, median 99.8%. Samples span Jul 2025 to Sep 2026.
- Under label
- 16/42
- Median purity
- 99.8%
- Latest sample
- Sep 2026
- Ships from
- China
more than 5% short
47.79%–99.95% range
first tested Jul 2025
per vendor listing
Our read on WllyBIO
32 of WllyBIO's 45 graded samples passed (71%), and 100% of all samples were sent in by buyers rather than by the shop.
Results are improving: 83% passed over the latest six months, up from 67% before.
When a sample failed, the most common reason was purity under 99.5% (10 times).
3 samples failed identity, meaning the lab could not confirm the vial held the labelled peptide.
Against the 302 shops with at least five graded tests, WllyBIO's pass rate is at or above 47% of them, and it has more tests on record than 75% of them.
When and how WllyBIO was tested
Samples per month. The darker part of each bar failed.
- Labs used
- Krause Analytical (34), BTLabs (6), Chromate (2), Harrens Lab (1)
- Who sent the samples
- buyers 100%
- Batches covered
- 7 distinct batch numbers; 2 checked for endotoxins
Why WllyBIO's failed samples failed
The 6 most recent failed tests, with the lab's reason.
Retatrutide · Aug 5, 2026
the lab could not confirm it was the labelled peptide
Tesamorelin · Aug 4, 2026
the lab could not confirm it was the labelled peptide
Tesamorelin · Nov 25, 2025
purity under 99.5%; amount in the vial more than 35% off the label
Tirzepatide · Oct 29, 2025
purity under 99.5%
BPC-157 · Sep 10, 2025
purity under 99.5%
BPC-157 · Aug 31, 2025
purity under 99.5%
Lab testing results
Independent results across 6 products.
Individual lab tests
Date
9/30/2026
Purity
99.9%
Quantity
20 mg → 19.99 mg
Lab
Harrens Lab
Vial
No label / Silver crimp / Clear Pink cap
Date
9/5/2026
Purity
99.9%
Quantity
30 mg → 35.3 mg
Lab
BTLabs
Vial
No label / Silver crimp / Red cap
Date
8/25/2026
Purity
99.8%
Quantity
20 mg → 20.1 mg
Lab
BTLabs
Vial
No label / Silver crimp / Blue cap
Date
8/5/2026
Purity
99.9%
Quantity
50 mg → 49.2 mg
Lab
Krause Analytical
Vial
No Label / Silver Crimp / Clear Blue Cap
Date
8/5/2026
Purity
—
Quantity
—
Lab
Krause Analytical
Vial
No Label / Silver Crimp / Clear Cap
| Product | Date | Score | Purity | Quantity | Lab | COA |
|---|---|---|---|---|---|---|
| RetatrutideNo label / Silver crimp / Clear Pink cap | 9/30/2026 | 10.0 | 99.9% | 20 mg → 19.99 mg | Harrens Lab | View |
| TirzepatideNo label / Silver crimp / Red cap | 9/5/2026 | 10.0 | 99.9% | 30 mg → 35.3 mg | BTLabs | View |
| RetatrutideNo label / Silver crimp / Blue cap | 8/25/2026 | 10.0 | 99.8% | 20 mg → 20.1 mg | BTLabs | View |
| GHK-CuNo Label / Silver Crimp / Clear Blue Cap | 8/5/2026 | 10.0 | 99.9% | 50 mg → 49.2 mg | Krause Analytical | View |
| RetatrutideNo Label / Silver Crimp / Clear Cap | 8/5/2026 | — | — | Krause Analytical | View |
Which WllyBIO products tested best
GHK-Cu and Retatrutide have the strongest record, graded A or B.
Tirzepatide graded C.
Ipamorelin and BPC-157 graded D or E: a large share of their samples missed purity or quantity thresholds.
Buying from WllyBIO
If you order from WllyBIO, 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 WllyBIO's prices yet. Shipping, payment and refund terms are on their site.
The official store is www.wllybio.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 WllyBIO
Create a free account to save this vendor, get alerts for new lab tests, and watch price changes.
WllyBIO: common questions
Is WllyBIO legit?
We rate lab records, not businesses. Mixed lab record: 45 independent tests, 26 of 42 lots filled to label, median purity 99.8%, 2 of 5 products graded D or E. Each result links to its original certificate in the table above.
What do WllyBIO reviews say?
We don't hold scored customer reviews for WllyBIO yet. The independent lab results on this page are the evidence we have.
Which WllyBIO peptides tested best?
We have graded 5 WllyBIO products. GHK-Cu and Retatrutide graded A or B. Ipamorelin and BPC-157 graded D or E.
Is there a WllyBIO coupon code?
We don't have a verified WllyBIO coupon code. A discount changes the price, not what is in the vial.
Where does WllyBIO ship from?
Public listings place WllyBIO's shipping origin in China. Check the shop's own shipping page before ordering, as origin can change.
Ordering from WllyBIO?
Mixed lab record: 45 independent tests, 26 of 42 lots filled to label, median purity 99.8%, 2 of 5 products graded D or E.
Contact
- china
- www.wllybio.com