Frequently Asked Questions

All products sold by PeptideArks are strictly for in-vitro laboratory research purposes only. They are not intended for human consumption, veterinary use, or any in-vivo experiments. By purchasing you confirm you are a qualified researcher.

Yes. We use two independent third-party testing laboratories — Janoshik Analytical and Chromate — to verify purity and identity. COAs are available on individual product pages and can be verified directly on each lab's website.

We accept major credit and debit cards through Stripe, as well as cryptocurrency payments including Bitcoin, Ethereum, Solana, USDC, USDT, and more. Crypto payments have zero processing fees.

Orders ship via USPS Priority Mail Small Flat Rate Box and typically arrive within 2-3 business days within the United States. All orders include tracking. We currently ship to US addresses only.

Yes. Orders above a certain threshold qualify for free shipping. The current threshold is displayed in your cart. We also offer bulk discount tiers — the more you order, the more you save.

All orders are shipped in plain, discreet protective packaging with no external branding. Products are secured to prevent damage during transit.

We accept returns of unopened, undamaged products within the timeframe described in our Refund Policy. Crypto payment refunds are issued in USDC stablecoin to a wallet address you provide. Please visit our Refund Policy page for full details.

Currently we ship only within the United States. We are evaluating international shipping options and hope to expand availability in the future.

Once your order ships, you will receive a confirmation email with a USPS tracking number. You can also check your order status on the Track Order page or in your account dashboard if you have an account.

No, guest checkout is available. However, creating a free account lets you track orders, save shipping addresses, build a wishlist, and check out faster on future orders.

After selecting crypto at checkout, you choose your preferred network and token. We generate a unique payment address with an exact amount. Once your transaction is confirmed on the blockchain, your order is processed automatically. There are no processing fees for crypto payments.

Our peptides are research-grade with purity levels documented on each product's Certificate of Analysis. Most products exceed 98% purity as verified by RP-HPLC testing at our independent third-party labs.