Third-party lab testing: 57 independent Janoshik assays on file, covering 51 substances, median measured purity 99.4%, most recent test 2024-11-27.
Finnrick, an independent testing programme, publishes 41 assays for Qingdao Sigma Chemical QSC: 27 met its Purity focus threshold (at least 99.5% purity, no more than 35% dosage deviation) and 14 did not. Most recent assay 23 Jul 2026.
Qingdao Sigma Chemical QSC registered as [object Object], listed by Finnrick as "active", has no storefront on record — Finnrick lists only a messaging or social contact. Source: Finnrick, https://www.finnrick.com/vendors/qingdao-sigma-chemical-qsc.
Qingdao Sigma Chemical QSC sells direct to researchers and at wholesale. The site says it has traded since 2025. It lists 600 products, including Tesamorelin, Eloralintide, Tirzepatide, Retatrutide, Sermorelin, and TB-500, plus 9 other compounds. It also produces and labels to order, so stock sold under other brand names may come from here.
In its own words: “Your personal data will be used to support your experience throughout this website, to manage access to your account, and for other purposes described in our privacy policy .”
Of the 12 product pages we opened, every one states ≥99% purity and every one links its own certificate.
Prices run from $100.00 to $1430.00 across 600 listed products. Payment is by cryptocurrency, bank transfer, credit card, and paypal. Orders ship with FedEx and USPS.
Site check: 600 products listed; payment by cryptocurrency, bank transfer, credit card, paypal; ships via FedEx, USPS.
Qingdao Sigma Chemical QSC is listed as active. Finnrick Grade F. Finnrick avg score: 7/10 across 28 samples (2 products). Failing quality. Not recommended.
Qingdao Sigma Chemical QSC holds independent lab grade F, assigned across 28 graded samples, average score 7/10. That grade comes from an independent grader's own sampling, not from PeptideAtlas, and it describes the samples that grader obtained rather than every batch sold.
Independent lab test results for Qingdao Sigma Chemical QSC
11 of these 12 assays report a measured purity figure. The other 1 confirm the substance was submitted and tested but carry no purity number on the certificate, which is not the same as a failed result.
Source: Finnrick, as published 2026-08-09. Pass and fail are Finnrick's classification against its own threshold, not ours.
The record for Qingdao Sigma Chemical QSC
Status
Active
Independent lab grade
F (28 samples)
Average grader score
7/10
Independent assays on file
57
Median measured purity
99.4%
Vendor type
Research-use supplier
What we found
Messaging-only contact. The only contact route is a messaging app, with no email address published. source
White-label supplier. Offers custom labelling or custom production to order, which means product sold under other brand names may originate here. source
Public pricing. Publishes prices on 600 of 600 catalogue entries. source
Card payments accepted. Accepts Cryptocurrency, Bank Transfer, Credit Card, and PayPal, so card chargeback protection applies. source
Research-use-only notice. The site carries an explicit research-use-only / not-for-human-consumption notice. source
This vendor advertises ≥99%. Across 57 independent Janoshik assays of its products, median measured purity is 99.4%, most recently 2024-11-27.
Ordering and payment
Payment methods
Cryptocurrency, Bank Transfer, Credit Card, PayPal
Card payments
Accepted
Cryptocurrency
Accepted (USDT, BTC)
Bank transfer
Accepted
Pricing
Listed publicly on the site
Currency
USD
Online checkout
Available
Shipping and handling
Ships to
United States, United Kingdom, Europe, Canada, Australia, Asia, Worldwide
Carriers
FedEx, USPS
Lost or damaged parcels
Reshipments & Damaged Orders
Returns and guarantees
Returns
Return, Refund & Shipping Policy
Guarantee
QSC provides one free reshipment or store credit for a future order, at your choice, for orders seized by customs. The guarantee is limited to one occurrence per order. Submit documented proof of seizure to [email protected] within 7 days of the expected delivery date. Refunds are not issued.
Research-use notice
Published on the site
Company details
Legal name
QSC Peptides
Trading since
2025
Basis for location
Site copy references China; Site copy references United States; Site copy references United Kingdom; Site copy references Canada
Contact channels
Contact page
https://qscpeptide.com/contact-us/
Messaging
WhatsApp
Testing and certificates
Purity grades advertised
≥99%
Products listed
600
How we checked
These details were read from Qingdao Sigma Chemical QSC's own website on 2026-08-17. Pages consulted:
Qingdao Sigma Chemical QSC is listed as active and we hold 57 independent Janoshik assays on file, median measured purity 99.4%; 41 Finnrick assays (27 passing, 14 failing its purity threshold); an independent lab grade of F. That is evidence about the batches that were tested or published, not a guarantee about the vial you receive.
Has Qingdao Sigma Chemical QSC been lab tested?
Yes. We hold 57 third-party Janoshik assays for Qingdao Sigma Chemical QSC, covering 51 substances, with a median measured purity of 99.4%. The most recent is dated 2024-11-27. Finnrick, an independent testing programme, publishes 41 assays for Qingdao Sigma Chemical QSC: 27 met its Purity focus threshold (at least 99.5% purity, no more than 35% dosage deviation) and 14 did not. Most recent…
How do you pay Qingdao Sigma Chemical QSC?
Qingdao Sigma Chemical QSC accepts Cryptocurrency, Bank Transfer, Credit Card, PayPal.