We typically respond to all email inquiries within 24 hours on business days (Monday-Friday, 9am-6pm EST). For urgent invoice issues, please include your invoice number in the subject line for priority handling.

Once your invoice ships, you'll receive a confirmation email with tracking information. You can also check your invoice status by emailing support@twentyfoldlabs.com with your invoice number. Invoices are processed within 0-2 business days, with most arriving within 1-4 business days from fulfillment. Every invoice includes free shipment protection.

We're sorry to hear that. Please email support@twentyfoldlabs.com immediately with your invoice number and photos of the damage. Photo evidence is required for all claims. Once verified, we'll send a one-time replacement within 24 hours at no cost. One replacement per account per invoice, subject to review.

Every invoice includes a batch-specific Certificate of Analysis (CoA) verifying purity, identity, and quality. You can also access CoAs on each product page. If you have questions about a specific CoA or need additional documentation, our support team is happy to help at support@twentyfoldlabs.com.

Yes. Volume Pricing for Labs gives your lab 40% off 10+ units of a compound and 50% off 50+ units, as a one-time invoice with free 2-day signed delivery (adult signature required). For quantities beyond that or custom requests, email support@twentyfoldlabs.com and we'll put together a quote.

While we cannot provide medical or therapeutic advice, our team can help you understand the specifications, purity levels, and research applications of our peptides. Email us with details about your lab's research focus, and we'll direct you to relevant compound documentation and published research.

Every invoice includes access to batch-specific Certificates of Analysis. CoAs are available on each product page and in our full CoA library, and you can scan the QR code on your vial to open the CoA for its exact batch. If you need a specific CoA or have questions about lab results, email us with your invoice number and we'll send it right over.

Payment declines can occur for several reasons. First, ensure your billing address matches your card exactly. If issues persist, try a different payment method or contact your bank to authorize the transaction. You can also email us and we'll help troubleshoot or provide alternative payment options.