Refunds & Returns for NATIONAL SCIENCE LABS, LLC
Refunds and Return Policy
Because National Science Labs products are research materials, general returns are not accepted. Returns are accepted only when an item arrives damaged, defective, or incorrect.Eligible Claims
- Items that arrive damaged or defective
- Items that do not match the product ordered
Replacements and Refunds
Approved claims may qualify for a replacement. Exchanges are not accepted. If a refund is approved, it will be issued to the original payment method after any required return is received and inspected. Financial institutions may require 5–10 business days to post the refund.Return Shipping
Approved returns for damaged, defective, or incorrect products are free of charge. If a physical return is required, National Science Labs will provide return instructions and a prepaid shipping label.How to Submit a Claim
Contact [email protected] with the order number, a description of the issue, and clear photographs of the product and packaging.Order Cancellations
Cancellation requests may be submitted before shipment, but cancellation is not guaranteed once order processing has begun. Orders that have shipped cannot be cancelled.Research-Use Notice
All products are sold strictly for laboratory research use only and are not for human consumption or clinical use. NATIONAL SCIENCE LABS, LLC 236 E. MAIN ST, STE 47SEVIERVILLE, TN 37862, USA (865) 412-8711 [email protected]
Returns, Refunds & Cancellations Policy for www.nationalsciencelabs.co (National Science Labs™)
Retain lyophilized vials at 0°F in a frost-free freezer, shielded from light and humidity. Stability spans 3–5 years under proper conditions.
Our Commitment to Quality and Fairness
Peptides undergo third-party confirmation of ≥99% purity, accurate mass, and lyophilized state before dispatch. Given their sensitivity for lab-only use, returns are restricted once orders leave our control to maintain supply integrity for all investigators. We review valid concerns individually and support our products accordingly.
When Returns May Be Considered (Case-by-Case Only)
For Research Use Only. Statements not evaluated by FDA.
Evaluations occur only with documented evidence in these scenarios:
- Carrier-verified damage or non-delivery (report within 48 hours with photos).
- Wrong item or quantity shipped (notify within 5 business days; unopened vial required).
- Independent lab confirmation of purity <99% on sealed vial (submit report within 10 days).
Approved cases receive replacement or refund at our discretion after return.
Non-Returnable / Final Sale Items
No returns or refunds apply in these situations:
- Customer-initiated changes or errors
- Opened/reconstituted vials
- Post-delivery cold-chain disruptions
- Requests beyond 14 days from receipt.
- International shipments (regulatory barriers)
How to Request Review
Email [email protected] within specified windows, including:
- Order number
- Relevant photos/documentation
- Supporting evidence (e.g., carrier claim, external CoA)
Decisions arrive in 3–5 business days. Approved returns include prepaid labels.
All sales final unless explicitly authorized in writing by National Science Labs.
For Research Use Only. These products are not for human use.

