FAQs
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— FREQUENTLY ASKED QUESTIONS
Answers to the questions we hear most — about ordering, shipping, products, and how we work.
Can’t find what you’re looking for? Our support team is one email away at support@greatestpeptides.com, or check our Shipping & Returns and Terms & Conditions pages for full policy details.
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01 — ORDERING & PURCHASING
How ordering works.
Placing an order, payment methods, accounts, and bulk pricing.
How do I place an order?
Browse the catalog, add the products you need to your cart, and check out. You’ll receive an order confirmation by email right away.
What payment methods do you accept?
We accept the secure payment options shown at checkout, including major cards and crypto where available. All payments are processed over encrypted, PCI-compliant connections.
Do I need to create an account to order?
You can check out as a guest, but creating an account lets you track orders, download your COAs, and reorder faster.
Can I cancel or modify my order after it’s placed?
Email support@greatestpeptides.com as soon as possible. We can usually adjust an order before it enters fulfillment, but once it ships it can’t be changed.
Do you offer wholesale or bulk pricing?
Yes. Email support@greatestpeptides.com with the products and quantities you need and we’ll send bulk pricing.
Why is my payment being held or reviewed?
Occasionally an order is flagged for a routine verification check. This protects both of us and usually clears within one business day.
02 — SHIPPING & DELIVERY
How your order gets to you.
Shipping methods, processing times, costs, and how we handle discreet packaging.
Do you ship internationally?
We currently ship within the United States. Availability may change over time — options are shown at checkout.
When will my order ship?
In-stock orders placed before 3PM EST on a business day ship the same day. Orders placed later ship the next business day.
How long does shipping take?
Most domestic orders arrive within 2–5 business days after dispatch, depending on your location and the method selected.
What are your shipping rates?
Rates are calculated at checkout based on speed and destination. Orders above our free-shipping threshold ship free.
Is the packaging discreet?
Yes. Every order ships in plain, unmarked outer packaging with no product details on the outside.
Will my package require a signature?
Most orders don’t, but higher-value shipments may require a signature for security.
How do you handle shipping in extreme heat?
Our peptides ship lyophilized (freeze-dried), which is stable at ambient temperatures during transit. Cold packs are available on request for temperature-sensitive compounds.
Is my shipment insured?
Shipments are fully tracked, and we’ll work with you to resolve any loss or damage in transit — just contact support.
03 — TRACKING & RECEIVING
After your order ships.
Tracking, address changes, and what to do if something goes wrong in transit.
How do I track my order?
You’ll receive a tracking number by email when your order ships. You can also find it in your account.
My tracking hasn’t updated — what should I do?
Carrier scans can lag by a day. If there’s no movement after two business days, contact support and we’ll investigate.
Can I change my shipping address after ordering?
If the order hasn’t shipped yet, email us right away and we’ll update it. Once shipped, the address can’t be changed.
My package says delivered but I didn’t receive it — what now?
Check with others at your address and your carrier first, then contact us and we’ll help you file a claim.
04 — PRODUCT INFORMATION
About our compounds.
Purity, documentation, storage, and what’s in every vial.
What purity are your peptides?
Every product is 99%+ purity, verified by independent third-party HPLC and mass spectrometry.
Do your products come with a Certificate of Analysis?
Yes — each batch has a batch-specific COA, available on the product page and via the QR code on the vial label.
How should I store your peptides?
Store lyophilized vials in a cool, dark place; refrigerate or freeze for long-term storage. Once reconstituted, refrigerate and use within the recommended window.
What’s included with each vial?
A single lyophilized peptide vial at the listed quantity and purity, with a scannable link to its batch-specific COA.
05 — RESEARCH USE & COMPLIANCE
Who can buy and how products may be used.
We’re a supplier of research-use-only materials. These FAQs cover what that means for you.
What does “Research Use Only” (RUO) mean?
Our products are intended strictly for in-vitro laboratory research. They are not drugs, foods, cosmetics, or supplements, and are not for human or veterinary use.
Who is eligible to purchase from Greatest Peptides?
Qualified researchers, laboratories, and institutions purchasing for lawful research purposes.
Will I need to verify my research use?
By purchasing, you confirm you’re a qualified researcher or authorized institution and agree to use all products solely for lawful research.
Can I resell your products?
Reselling requires an authorized wholesale arrangement — contact us to discuss.
06 — RETURNS & ISSUES
If something goes wrong.
How returns work, and what to do if your order arrives damaged, wrong, or incomplete.
What is your return policy?
Because these are research materials, unopened and unused items may be eligible for return within our stated window. See our Returns & Refunds page for details.
What do I do if my order arrives damaged?
Email support@greatestpeptides.com within 7 days with photos and your order number, and we’ll arrange a replacement or refund.
I received the wrong item — what now?
Contact support with your order number and we’ll correct it right away at no cost to you.
My vial looks like it has less product than expected — is that normal?
Lyophilized peptide forms a small pellet or thin film that can be hard to see; the full labeled amount is present. If you have concerns, reach out.
07 — PRIVACY & SECURITY
Your data and your account.
How we handle your information, marketing preferences, and account requests.
Will my information be shared with third parties?
We never sell your data. Your information is used only to process orders and provide support, in line with our Privacy Policy.
Can I unsubscribe from marketing emails?
Yes — use the unsubscribe link in any email, or email support and we’ll remove you.
How do I delete my account or request my data?
Email support@greatestpeptides.com and we’ll handle account deletion or a data request in line with applicable privacy law.
MORE INFORMATION
Looking for full policy details?
These FAQs cover the most common questions, but our policy pages have the comprehensive answers — including the legal terms governing every order.
DIDN’T FIND YOUR ANSWER?
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Our support team answers research, order, and documentation questions every business day.
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