Research Grade · 99%+ Purity

Advanced Peptides
for Optimal
Performance

High-Quality Research Compounds for Science, Fitness & Longevity. HPLC-verified, same-day delivery across Southern California.

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Retatrutide BPC-157 PT-141 NAD+ Tirzepatide TB-500
Third-Party Tested
Same-Day Delivery
Discreet Packaging
Cash on Delivery
Order Confirmation Call

⚠ Research Use Only. All compounds sold strictly for in vitro laboratory research. Not for human consumption or veterinary use. Must be 18+ to purchase.

Our Products

35+ research-grade peptide compounds — HPLC verified, in stock, same-day delivery

About Core Lab

Peptide Expertise

The Science of Results

Core Lab Peptides offers top-quality, HPLC-verified research compounds sourced from certified suppliers — backed by rigorous quality control and same-day delivery throughout Southern California.

  • 99%+ Purity Guaranteed on Every Batch
  • HPLC & Mass Spectrometry Verified
  • Certificate of Analysis Available on Request
  • Same-Day Delivery — Orders Before 2PM
  • Cash on Delivery — No Upfront Payment
  • Discreet Unmarked Packaging
  • Order Confirmation by Phone
Retatrutide HGH Kit Tesamorelin

Why Choose Us?

What sets Core Lab Peptides apart from the rest

Superior Quality
All compounds are HPLC-tested and verified at 99%+ purity before every dispatch.
Same-Day Delivery
Order before 2PM for guaranteed same-day delivery direct to your door.
Discreet Shipping
Plain, unmarked packaging — no external branding or product identification.
Cash on Delivery
Zero upfront payment. Pay cash directly to the courier on receipt of your order.
Confirmation Call
We call every customer to verify their order before dispatching for delivery.
CoA Available
Certificate of Analysis on request for every compound in our catalog.

How It Works

Simple, fast, and discreet — four easy steps

Browse & Add to Cart
Choose from 35+ research compounds. Filter by category, select dosage, and add to cart.
Place Your Order
Enter your address and phone. No payment needed upfront — cash on delivery only.
We Call to Confirm
Our team phones you within 30–60 minutes to confirm your order and delivery window.
Same-Day Delivery
Discreet delivery to your door. Pay cash to the courier. Orders before 2PM same day.

Frequently Asked Questions

Everything you need to know

We serve greater Southern California including Los Angeles, Orange County, San Diego, and the Inland Empire. Enter your address at checkout — we'll confirm delivery availability when we call.
All compounds are sourced from certified suppliers and tested via HPLC and mass spectrometry. We maintain 99%+ purity on every batch. Certificate of Analysis available on request.
No payment required when placing your order online. After our phone confirmation, a courier delivers your package and you pay cash on receipt.
Yes. All orders ship in plain, unmarked packaging with no branding. The courier will contact you approximately 30 minutes before arrival.
Yes — BAC Water (10mL), 0.5mL syringes, and Pen with Cartridge injection systems are all in the Supplies category and can be added to any order.

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Place Your Order

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Order Summary

✓ Cash on Delivery — No payment now. We'll call to confirm. Pay cash to the courier on arrival.
By placing this order you confirm you are 18+ and all products are for in vitro research purposes only.