HK Fat Cat reviews
HK Fat Cat reviews: 3 independent lab tests across 1 product, with a limited lab record.
Written by the Peptide Vendor Reviews editorial team
Is HK Fat Cat legit? Lab record: Limited
How we rate- 3 independent tests
- 1 of 2 lots filled to label
- Median purity 99.67%
- 1 of 1 product graded D or E
Some of HK Fat Cat's products graded D or E. The shops below tested A or B for the same peptides.
Better-tested Tirzepatide
HK Fat Cat graded E. Paradigm Peptide's Tirzepatide graded A across 10 tests, $4.97 / 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 HK Fat Cat 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.
Tirzepatide
HK Fat Cat: grade EHK Fat Cat 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 HK Fat Cat's site.
- TirzepatideEBAD
- Tests
- 3
- Passed
- 50.0%
What the testing shows
Across 2 measured samples from HK Fat Cat, 1 came in more than 5% under the quantity on the label (50%). Purity across 2 readings ran from 99.64% to 99.7%, median 99.67%. Samples span Dec 2025 to May 2026.
- Under label
- 1/2
- Median purity
- 99.67%
- Latest sample
- May 2026
- Ships from
- China
more than 5% short
99.64%–99.7% range
first tested Dec 2025
per vendor listing
Our read on HK Fat Cat
1 of HK Fat Cat's 2 graded samples passed (50%), and 100% of all samples were sent in by buyers rather than by the shop.
When a sample failed, the most common reason was no purity figure on the certificate (1 time).
When and how HK Fat Cat was tested
Samples per month. The darker part of each bar failed.
- Labs used
- BTLabs (2), Krause Analytical (1)
- Who sent the samples
- buyers 100%
- Batches covered
- 1 distinct batch numbers; 1 checked for endotoxins
Why HK Fat Cat's failed samples failed
The only failed test, with the lab's reason.
Tirzepatide · May 2, 2026
amount in the vial more than 35% off the label
Lab testing results
Independent results across 1 product.
Individual lab tests
Date
5/2/2026
Purity
—
Quantity
—
Lab
BTLabs
Vial
White Label / Silver Crimp / Orange Cap
Date
5/2/2026
Purity
99.7%
Quantity
30 mg → 15.4 mg
Lab
BTLabs
Vial
White Label / Silver Crimp / Orange Cap
Date
12/30/2025
Purity
99.64%
Quantity
20 mg → 19.8 mg
Lab
Krause Analytical
Vial
No Label / Silver Crimp / Yellow Cap
| Product | Date | Score | Purity | Quantity | Lab | COA |
|---|---|---|---|---|---|---|
| TirzepatideWhite Label / Silver Crimp / Orange Cap | 5/2/2026 | — | — | BTLabs | View | |
| TirzepatideWhite Label / Silver Crimp / Orange Cap | 5/2/2026 | 10.0 | 99.7% | 30 mg → 15.4 mg | BTLabs | View |
| TirzepatideNo Label / Silver Crimp / Yellow Cap | 12/30/2025 | 10.0 | 99.64% | 20 mg → 19.8 mg | Krause Analytical | View |
Which HK Fat Cat products tested best
Tirzepatide graded D or E: a large share of its samples missed purity or quantity thresholds.
Buying from HK Fat Cat
We don't track HK Fat Cat's prices yet. Shipping, payment and refund terms are on their site.
The official store is www.hk-fatcat.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 HK Fat Cat
Create a free account to save this vendor, get alerts for new lab tests, and watch price changes.
HK Fat Cat: common questions
Is HK Fat Cat legit?
We rate lab records, not businesses. Limited lab record: 3 independent tests, 1 of 2 lots filled to label, median purity 99.67%, 1 of 1 product graded D or E. Each result links to its original certificate in the table above.
What do HK Fat Cat reviews say?
We don't hold scored customer reviews for HK Fat Cat yet. The independent lab results on this page are the evidence we have.
Which HK Fat Cat peptides tested best?
We have graded 1 HK Fat Cat product. Tirzepatide graded D or E.
Is there a HK Fat Cat coupon code?
We don't have a verified HK Fat Cat coupon code. A discount changes the price, not what is in the vial.
Where does HK Fat Cat ship from?
Public listings place HK Fat Cat's shipping origin in China. Check the shop's own shipping page before ordering, as origin can change.
Ordering from HK Fat Cat?
Limited lab record: 3 independent tests, 1 of 2 lots filled to label, median purity 99.67%, 1 of 1 product graded D or E.
Contact
- china
- www.hk-fatcat.com