You ask, we answer.

Every production lot is characterized by an independent third-party laboratory before release: HPLC for purity, mass spectrometry for identity confirmation, and endotoxin screening. We do not test our own product, and we do not publish house averages.

Yes. Every product page links the certificate for the lot currently in stock, and any certificate can be pulled by lot number on the verify page, including for lots that have sold out.

It identifies the exact production batch your vial came from, formatted MRD-YYMM-X. Entering it on the verify page returns that batch’s assays, chromatogram, and release date.

It never receives a lot number and never reaches the catalog. If a released lot is later found out of spec, it is pulled from sale, every buyer of that lot is emailed directly, and affected orders are refunded in full.

Yes. A blend’s certificate lists each compound and its amount in the vial, tested as the finished blend rather than as separate inputs.

Orders placed before 2 PM CT ship the same business day via FedEx 2Day Air. Orders after cutoff ship the next business day. Tracking is emailed automatically when the label is created.

No. Meridian ships within the United States only. We do not forward to freight consolidators or international reshippers.

FedEx 2Day is free on orders over $150. Below that it is a flat $12. Overnight is available at cost.

Yes. Discounts begin at 5 units of the same product and increase at 10 or more. For standing laboratory orders, contact us and we will quote directly.

Discreet outer packaging with no compound names on the exterior, protective inserts around each vial, and the printed certificate for every lot in the box.

Store lyophilized vials at −20°C for long-term stability. Short-term storage at 2–8°C is acceptable. Keep away from light and moisture and avoid repeated freeze–thaw cycles.

Add solvent slowly down the inside wall of the vial rather than directly onto the powder cake, then swirl gently until dissolved. Do not shake. Record the reconstitution date on the label.

Refrigerated at 2–8°C and protected from light, most compounds in this class remain workable for several weeks. Validate the window your own protocol requires.

No. Lyophilized cakes commonly break loose in transit. Purity is unaffected. If a vial arrives cracked or with a compromised seal, contact us and we will replace it.

Meridian supplies reference compounds for in-vitro and laboratory research. Nothing sold here is a drug, supplement, or article for human or veterinary use, and nothing on this site is medical, dosing, or safety guidance.

Qualified researchers and laboratories, 21 years of age or older, purchasing for laboratory research. You affirm this at checkout.

No. Meridian is not a compounding pharmacy or an outsourcing facility as defined under sections 503A and 503B of the Federal Food, Drug, and Cosmetic Act.

No. Statements on this site have not been evaluated by the U.S. Food and Drug Administration, and no product listed is intended to diagnose, treat, cure, or prevent any disease.

Unopened product in original packaging is covered by a 30-day money-back guarantee. Opened vials cannot be returned for contamination-control reasons.

Email support within 7 days with a photo of the packaging and the vial. Replacements ship the same business day, no return required.

Tell us. Use the report link on the certificate page or email support with the lot number; discrepancy reports are reviewed by a person, not a queue.