Frequently Asked Questions
How can I place an order?
You can place an order through our website by adding products to your cart and completing the checkout process. For bulk orders or special requests, contact us.
What payment methods do you accept?
We accept major credit cards, debit cards, and other secure payment options. Card charges appear on your statement as SIGMA. Contact support for more details.
How do I report a problem or make a complaint?
Email support@sigmacompounds.com with your order number if you have one. We resolve every complaint within 7 business days.
Do you offer international shipping?
Currently we offer shipping services only for the US and Canada.
How long does shipping take?
Shipping times vary based on location. Domestic orders typically arrive within 3–5 business days, while international orders may take 7–14 business days. See our Shipping page for details.
Do you provide tracking information?
Yes — once your order is shipped, you will receive a tracking number via email.
How should I store peptides?
Keep lyophilized peptides in a cool, dark place; for extended preservation, store at -20°C in a freezer. Once reconstituted, keep the solution refrigerated.
How long do peptides last?
Stored appropriately, lyophilized peptides remain viable for years. Reconstituted preparations should be used within weeks.
Where can I find your test results (COAs)?
Sigma Compounds states that its products are third-party tested. For testing documentation on a specific batch, contact support@sigmacompounds.com.
Are your products for human use?
No. All products are strictly for laboratory and research use only. They are not for human or animal consumption and are not drugs, foods, supplements, or cosmetics.