99.6% average purity, proven by a lab we don't own.

No. Every product Next Level Labs sells is a research compound intended for in vitro laboratory use only, which means it is studied in glassware and cell cultures outside a living organism, never administered to people or animals. This framing matters because it is what keeps research peptides legal to buy and possess in the US, and it is the standard our labeling, age gate, and product copy are built around. In practice, that means our pages describe only what these compounds do in published research literature, we make no therapeutic claims, and none of our statements have been evaluated by the FDA. Our products are not intended to diagnose, treat, cure, or prevent any condition. If you are looking for medical guidance, consult a licensed physician, and treat everything here as material for laboratory research rather than personal use.

Most orders ship within 1 to 2 business days once your payment clears, and they go out via UPS 2nd Day Air with 2-day delivery after that. Fast turnaround matters because research peptides are sensitive to delays sitting in transit, so we move them quickly and pack them discreetly in a plain bubble mailer with no NLL branding and a return address that shows our fulfillment location rather than your home. Shipping is a flat $10 on every order and free once you reach $200 or more, which is where bulk research orders tend to land, so larger orders effectively ship for nothing. We ship to the continental US only, 48 states, not Alaska, Hawaii, US territories, APO/FPO, or international. You get a tracking number when your label is created so you can follow the parcel to your door.

We accept Venmo Business at @NLL01 or Zelle, and we do not take credit cards. This keeps our costs low so prices stay low, and it removes the fraud exposure that would otherwise push prices up for everyone. There are three practical reasons behind it: most card processors will not handle research compounds even when properly labeled, card fees of 3 to 4 percent per transaction would raise every price, and chargeback fraud abuses the credit dispute system. Venmo and Zelle each take about 30 seconds to send and carry their own buyer dispute protections, so you give up very little by paying this way. If you want to pay less, you can apply an affiliate code at checkout for 10 percent off or qualify for bulk pricing at five or more vials, and those discounts can stack up to 20 percent.

For reconstituting a lyophilized research peptide, yes, you need bacteriostatic water, and we sell USP-grade bacteriostatic water so you can order it alongside your compounds in one shipment. It matters because lyophilized peptides arrive as a dried powder and have to be brought back into solution before any in vitro work, and bacteriostatic water includes a preservative that helps keep a reconstituted sample stable over its working life. The specific volumes, ratios, and storage parameters you use should follow the recipient laboratory's standard protocols for peptide handling, since those depend on the compound and the research design rather than a one-size-fits-all rule. We stock the water as a supply rather than offering dosing or reconstitution instructions, and any specific handling questions can be sent through our contact form so the right information reaches you for your setup.

Yes, you can return unopened vials within 14 days of delivery for a full refund, with the customer covering return shipping. We keep the window clear because research compounds are sensitive products, so anything opened or reconstituted is non-returnable for safety reasons once the seal is broken. A few situations are handled automatically in your favor: if a vial arrives damaged in transit we send a free replacement with no return needed, and if we ship the wrong product we replace it at our cost. The strongest part of the policy is our testing guarantee. If you independently test a vial and the result does not match the published COA for that lot, we refund you 100 percent and you keep the product. Full terms live on our refunds page so you can see exactly how each case is handled before you order.

Storage depends on the state of the compound, and the short version is that lyophilized peptides are the most forgiving while reconstituted samples are the most time-sensitive. This matters because peptides are delicate molecules, and proper storage is what protects the purity you paid us to verify through Finnrick testing all the way until the vial is actually used. In practice, keep lyophilized peptides at room temperature until they are opened, then move them to 2 to 8 degrees Celsius. Once a peptide is reconstituted, refrigerate it and use it within 28 days, since a sample in solution degrades faster than a dried powder. Bacteriostatic water can simply be kept at room temperature. Following these parameters, alongside your laboratory's own handling protocols, keeps a research sample representative of the COA that shipped with its lot.