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About QSC

QSC is an international research peptide manufacturer and partner-sourced supplier. Core peptides are produced in-house in China via solid-phase peptide synthesis, while a vetted manufacturing partner network expands the catalog. Every product β€” whether in-house or partner-sourced β€” is verified at β‰₯99% purity and distributed from domestic warehouses in the USA, EU, UK, Canada, Australia, Singapore, Thailand, and Vietnam.

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Guaranteed Money Back in 30 days return.
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⚠️ Warning: Active Impersonation Scam

We are not associated withΒ qingdaosigmachems.com / qingdaosigmachemical.com / qingdaosigmachemical.net / qingdaosigma.com. They are running a fraudulent scheme impersonating well-known vendors. Their other websites all look the same, only with different vendor name and domain name, includingΒ wuhanwanshengbio.com / wuhanwanshengbiotechnology.com, Β andΒ ggpeps.net.

If you have sent payment to their website, it might be lost, and QSC is unable to intervene.

πŸ›‘οΈ QSC’s only official storefront isΒ qscpeptide.com. Always verify you are on the correct site before making any payment

Manufacturer & Partner Network

In-house SPPS Β· Vetted manufacturing partners Β· Preparative HPLC Β· Mass spectrometry Β· Lyophilization

β‰₯99% Purity

HPLC + MS verification Β· Janoshik COA on every product page Β· Uniform QC across all sources

Region Warehouses

USA Β· EU Β· UK Β· Canada Β· Australia Β· Singapore Β· Thailand Β· Vietnam β€” Domestic delivery, no customs

100+ Countries

100+ CountriesChina warehouse international shipping for remaining markets worldwide

What Is QSC?

QSC is a peptide-focused manufacturer and partner-sourced supplier specialising in high-purity research peptides and specialty research compounds. Founded in China, QSC has grown into one of the most recognised peptide suppliers in the global research community, supplying laboratories and distributors in more than 100 countries.

QSC operates a dual sourcing model. Core peptides are produced in-house β€” from raw amino acid starting materials through solid-phase peptide synthesis (SPPS), preparative HPLC purification, analytical verification, and lyophilization. To expand its catalog and meet growing demand, QSC also partners with rigorously vetted manufacturers. All partner-sourced products undergo the same QSC quality control pipeline β€” HPLC purity analysis, mass spectrometry, impurity profiling, and Janoshik-verified COA documentation β€” ensuring identical standards regardless of production origin.

Orders are fulfilled from the warehouse nearest to the delivery address based on inventory availability. If a product is not in stock locally, fulfillment is handled through QSC’s China manufacturing facility. Orders containing multiple items may ship from more than one warehouse β€” in these cases, separate tracking numbers are issued and shipments may arrive on different dates.

Manufacturing & Partner Capabilities

In-House Synthesis

Automated SPPS (solid-phase peptide synthesis) Β· Custom peptide synthesis Β· Specialty research compounds Β· Raw peptide powders Β· Lyophilized formulations

Partner Network

Rigorously vetted manufacturing partners Β· Expanded compound catalog Β· Same QSC QC pipeline applied t

Unified Quality Control

Preparative and analytical HPLC Β· Mass spectrometry (MS) molecular verification Β· Impurity profiling Β· Full lyophilization production lines Β· Batch traceability Β· Identical QC process for in-house and partner-sourced prod

Ordering & Shipping Process

From checkout to delivery β€” here’s exactly how every QSC order works.

Step 1 β€” Place Your Order

πŸ›’Add to CartΒ  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β Browse and add items at qscpeptide.shop/shop

πŸ’³ Checkout & PayΒ  Β  Β  Β  Β  Β  Β  Β  Β Pay with Bitcoin (BTC), USDT (ERC-20), or SWIFT bank wire

πŸ“§ Order ConfirmationΒ  Β  Confirmation email sent after payment confirms on-chain

πŸ“¦ Tracking EmailΒ  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β Tracking info sent within 1–4 business days of payment receipt

Orders are processed within 1–3 business days after cryptocurrency payment is confirmed on the blockchain. Orders cannot be modified or cancelled once submitted and payment is confirmed.

Step 2 β€” Delivery Timelines

πŸ‡ΊπŸ‡Έ πŸ‡ͺπŸ‡Ί πŸ‡¬πŸ‡§ πŸ‡¨πŸ‡¦ πŸ‡¦πŸ‡Ί πŸ‡ΈπŸ‡¬ πŸ‡ΉπŸ‡­ πŸ‡»πŸ‡³ Domestic Warehouse

Ships directly to your local carrier β€” no customs, no international transit.

3–7 business days

πŸ‡¨πŸ‡³ China Warehouse

Used for international orders or when an item is out of stock at your regional warehouseΒ  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β 7–14 business daysΒ  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β  Β Local carrier tracking activates after customs clearance β€” no activity before that is normal.

⚠️ Split shipments:Β If you order multiple items and one isn’t available in your regional warehouse, it may ship separately from China. You’ll receive separate tracking numbers β€” packages may arrive on different dates. No extra shipping charge applies.

⚠️ China warehouse tracking:Β Local carrier tracking will show no activity while your package is in international transit. This only updates after customs clearance at your destination β€” this is completely normal.

RegionWarehouseDeliveryCustoms
πŸ‡ΊπŸ‡Έ United StatesUS Domestic3–7 business daysNone required
πŸ‡ͺπŸ‡Ί European UnionEU Domestic3–7 business daysNone required
πŸ‡¬πŸ‡§ United KingdomUK Domestic3–7 business daysNone required
πŸ‡¨πŸ‡¦ CanadaCA Domestic3–7 business daysNone required
πŸ‡¦πŸ‡Ί AustraliaAU Domestic3–7 business daysNone required
πŸ‡ΈπŸ‡¬ SingaporeSG Domestic3–7 business daysNone required
πŸ‡ΉπŸ‡­ ThailandTH Domestic3–7 business daysNone required
πŸ‡»πŸ‡³ VietnamVN Domestic3–7 business daysNone required
πŸ‡¨πŸ‡³ All other countriesChina ( Direct)7–14 business daysVaries by country

Quality Verification Standards

Every QSC peptide batch β€” whether in-house or partner-sourced β€” is verified before distribution. Certificates of Analysis are published directly on each product page and independently verifiable via theΒ Janoshik portal. For full COA verification guidance seeΒ QSC Peptide Lab β†’

HPLC Purity

β‰₯99% specification Β· Peak area analysis

Mass Spectrometry

Molecular identity confirmation

Impurity Profiling

Deletion sequences, oxidation prod

Batch Traceability

Janoshik-verifiable COA per batch

Frequently Asked Questions

What is QSC?

QSC is a research peptide manufacturer and partner-sourced supplier based in China. Core peptides are produced in-house using SPPS, and QSC also partners with rigorously vetted manufacturers to expand its catalog. All products undergo the same QSC quality control process. QSC distributes globally from 8 regional warehouses β€” USA, EU, UK, Canada, Australia, Singapore, Thailand, and Vietnam β€” supplying laboratories in more than 100 countries. Popular products include Retatrutide, Tirzepatide, Semaglutide, HGH, BPC-157, and the Clavicular Ascension Stack.

Is QSC a manufacturer or a reseller?

QSC operates as both a direct manufacturer and through a vetted partnership model. Core peptides are produced at QSC’s China facility β€” synthesised, purified, verified, and lyophilized in-house. QSC also partners with rigorously vetted manufacturers to expand its product range. All partner-sourced products undergo the same QSC quality control and analytical verification before distribution. QSC does not source product from undisclosed or unvetted third parties.

Is QSC associated with qingdaosigmachemical.com / qingdaosigmachemical.net / qingdaosigma.com?

No. QSC (qscpeptide.com) has no affiliation with qingdaosigmachemical.com / qingdaosigmachemical.net / qingdaosigma.com. That website is not operated by QSC, is not an authorised distributor, and is fraudulent. If you made a payment to that website, QSC is unable to assist β€” please contact your payment provider directly. The only official QSC storefront isΒ qscpeptide.com.

What is the Clavicular Ascension Stack?

The QSC Clavicular Ascension Stack is a 12-compound, 110-vial + 100-tablet extended research kit covering 8 biological pathways:

Retatrutide 10mgΒ 

Triple GLP-1/GIP/GCGR β€” Metabolic

Melanotan II 10mg

Melanocortin β€” Pigmentation

HGH 10 IU + IGF-1 LR3 1mg + CJC-1295 5mg

Triple-Layer GH Axis

GHK-Cu 100mg

Collagen & ECM Remodeling

BPC-157 10mg + TB-500 10mg

Tissue Repair & Recovery

Anavar / Oxandrolone 25mg

Lean Mass & Cortisol Control

10 lyophilized peptides, 1 oil injectable (Test Cyp), 1 oral tablet (Anavar). All at β‰₯99% purity with Janoshik COA.Β View Ascension Stack β†’

What is the Venus Protocol?

The QSC Venus Protocol is a 10-compound, 100-vial women’s health research kit covering 6 biological pathways. No androgens, no steroids:

Retatrutide 10mg

Triple GLP-1/GIP/GCGR β€” Metabolic

GHK-Cu 100mg + L-Glutathione 600mg Collagen, Skin & Hair / Brightening

NAD+ 500mgΒ +Β Epithalon 10mg Cellular Longevity & Energy

Β 

BPC-157 10mg + TB-500 10mg

Gut Health & Tissue Repair

CJC-1295 5mg + Ipamorelin 5mg

GH Axis & Sleep Quality

CJC-1295 5mg + Ipamorelin 5mg

GH Axis & Sleep Quality

All lyophilized. β‰₯99% purity with Janoshik COA.Β View Venus Protocol β†’

What is the Midas Longevity Protocol?

The QSC Midas Longevity Protocol is a 12-compound, 120-vial anti-aging research kit targeting 10 biological pathways of aging. No androgens, no steroids, gender-neutral:

NAD+ 500mgΒ +Β Epithalon 10mg

Sirtuin Activation + Telomerase

GHK-Cu 100mgΒ +Β SS-31 / Elamipretide 10mg

Collagen / ECM + Mitochondrial Repair

FOXO4-DRI 5mgΒ +Β Thymosin Alpha-1 5mg

Senolytic Clearance + Immune Rejuvenation

CJC-1295 5mgΒ +Β Ipamorelin 5mg

GH Axis Support

BPC-157 10mgΒ +Β TB-500 10mg

Tissue Repair & Recovery

L-Glutathione 600mgΒ +Β Humanin 10mg

Antioxidant + Cytoprotection

All lyophilized. β‰₯99% purity with Janoshik COA.Β View Midas Protocol β†’

How do I verify a QSC Certificate of Analysis?

Every QSC product page links directly to a Janoshik-verified COA entry. VisitΒ verify.janoshik.comΒ and enter the batch reference number from the COA β€” the Janoshik record confirms the compound tested, the purity result, and the date, completely independently of QSC. For a full verification guide seeΒ QSC Peptide Lab β†’

What payment methods does QSC accept?

QSC accepts Bitcoin (BTC) and USDT (ERC-20) cryptocurrency payments only. Order confirmation and tracking details are sent by email after payment is confirmed on the blockchain.

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