QSC Peptidology — research-grade peptides, batch-verified

Manufacturer-direct · ships from China·58 countries served · Free shipping on orders $1,000+

Batch SG-2606 · 99.4% HPLC · released 2026-08-16

Customs cleared

DDP — duties prepaid, no surprise fees on delivery.

Reship guaranteed

If customs holds your shipment, we reship it — free.

Testing reimbursed

Send a batch to Janoshik.com: passes, we cover the test. Fails, full refund and we pull the batch.

Shop GLP-1 catalog

Buying in volume? support@qscpeptidology.com for wholesale pricing.

Manufacturer-directIn-house HPLC/LC-MS12,400+ orders

Buyers are responsible for complying with their own country's research-use and import regulations.

≥99%HPLC verified

7–10 dto most countries

58countries served

Batch COAevery order

Most in demand

The most-researched compounds across the peptide community right now.

Tirzepatide 5mg — 10-Vial Pack

$89.9

Semaglutide 5mg — 10-Vial Pack

$89.9

Retatrutide 5mg — 10-Vial Pack

$139.9

BPC-157 5mg — 10-Vial Pack

$69.9

TB-500 5mg — 10-Vial Pack

$149.9

Full catalog · 188 vials

Browse all

Every SKU below ships direct from China as a 10-vial kit. Click through to see per-batch HPLC and pricing.

The essentials

Manufacturer-direct

We synthesize, purify, and lyophilize every SKU ourselves — no reseller markup.

10-vial kits only

Every SKU ships as a 10-vial kit, sized for lab and wholesale ordering.

In-house QC

HPLC purity, LC-MS identity, and LAL endotoxin on every batch. COA ships with your kit.

China-direct shipping

DDP via DHL, UPS, or FedEx to 58 countries. No regional warehouses.

Private label available

Neutral or your-branded packaging, 100+ kits per SKU minimum.

Common questions

The most-asked questions before a first order.

What's the actual shipping time from China?

3–13 business days depending on destination — 7–10 days for most US addresses. Customs clearance (DDP) is included; we cover any duties.

Is every batch verified by an independent third-party lab?

No — every batch is tested in-house (HPLC purity, LC-MS identity, LAL endotoxin screening) before it's released, and that in-house COA ships with your order as a PDF. Independent third-party re-testing is available for a specific batch on request; it isn't run by default on every SKU.

How do I pay if you don't accept credit cards?

USDT (Tron TRC-20, 5% off, fastest) through automatic checkout. Wire transfer, Cash App, and Apple Pay are available too — email us to arrange payment before you order. ACH is temporarily paused. Full payment-method details on the shipping & payment page.

When will I get shipping and tracking info after I order?

Orders placed before 4pm (China time) typically ship by 11am the next business day. You'll get an email with the tracking number as soon as the courier — DHL, UPS, or FedEx — scans it.

Can you do private label / white-label packaging?

Yes — neutral or your-branded vials and boxes, starting at 100 kits (10 vials/kit) per SKU. Labeling happens during production, so it requires your artwork and a proof-approval round before the first run. Full tiers on the wholesale page.

Can I get independent third-party testing done myself?

Yes, and we'll help cover it — if you have a batch independently tested at Janoshik.com and share the report with us: passes, we reimburse the test; fails, we refund your order (test cost included) and pull that batch from sale.

QSC Peptidology — manufacturer-direct research peptides: DDP customs clearance, reship guarantee, and Janoshik third-party test reimbursement