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Oath Research Ledger Two codes, checked against the live cart.

Oath Research Promo Codes

Contact Oath Research or this site

Two different contacts are useful here, depending on what's actually needed. For anything about an order — a purchase, a return, a shipping question, or Oath's testing and certificates — Oath Research itself is the one to reach, and it publishes a real phone number and a real street address rather than relying on a contact form alone. For anything about a code on this page specifically — one that's stopped applying, or a discount amount that doesn't match what's listed here — this site is the right place, and reports get reflected the next time the codes are checked against the live cart, not left sitting unaddressed.

Reaching Oath Research directly

Oath Research publishes a phone number, +1 480-999-1097, and a street address: 51 West Vaughn Avenue, Suite 205, Gilbert, Arizona 85233. Both are corroborated by independent business directories, not just listed on Oath's own site with nothing to back them up. Oath's online contact form requires creating an account before a message can be submitted; the phone number carries no such requirement.

Oath's published hours amount to staffed weekday hours; its own contact and about pages state slightly different windows, so this page won't repeat a specific range that Oath itself doesn't consistently state. For order-specific issues, Oath's stated response time is 24 to 48 hours. Oath will not advise on dosing or reconstitution by phone or otherwise — that's a standard, correct posture for a research-use supplier, not a support gap.

None of that contact information is specific to promo-code questions — it's the same phone number and address Oath publishes for any customer, order-related or not.

Reporting a code on this site

If one of the two codes on the homepage doesn't apply, or applies for a different amount than what's listed, that's worth flagging so the listing can be corrected. Reports can be sent to corrections@oathresearchpromocodes.com — include the code, the order total before and after trying it, and roughly when the attempt was made.

This isn't a channel for order support, returns, or anything that requires access to an actual Oath account or order history; for that, use the Oath contact details above instead. This address exists specifically for two things: a code that doesn't behave as described on this site, or a fact published here that's gone stale and needs updating.

There's no promise attached to response time for this address the way there is for Oath's own support line; it's a small site, and reports are read, but a specific turnaround isn't stated here because it hasn't been tested the way the codes themselves have.

One site, two purposes

This page intentionally keeps Oath's contact information and this site's contact information separate, because they solve two different problems. Oath can answer questions about an order, a certificate, a shipment, or a return. This site can only answer questions about what's published here — the two codes, their terms, when they were last checked, and the record of ones that no longer work.

Mixing the two up usually just means a slower answer either way: a question about an order sent to this site has to be redirected, and a question about this page's accuracy sent to Oath has no way of reaching the person who'd actually update it.

When in doubt about which one to use, the subject usually makes it obvious: anything with an order number or a payment attached belongs with Oath; anything about what's printed on this page belongs here. Either way, sending the right question to the right place is the fastest route to an actual answer.

Ready to use a code?

Copy either code above, then paste it into the discount field at checkout. The 20% code is for first orders; the 15% code works every time.