# Oath Discount Codes: Two Live, One Log | October 2026
Oath Discount Codes, Checked Against Checkout
*Oath Discount Codes — Tested, Dated, Logged | October 2026*
> Two Oath Research discount codes, checked against the live checkout on 2026-10-06: 20% off a first order, 15% off every order after. Dated, not advertised.
**Checkout Verification Log**
Two codes clear checkout today: 20% on a first order, 15% on any order with no minimum. Both were run against the live cart, not copied from another list. Everything below the line is dead.
- Checked 2026-10-06
- 518+ batches tested
- 99.64% purity · 12-mo
- Zero commission earned
Two codes are active as of the date below, each run against Oath Research's real checkout and logged with a result — not summarized, not paraphrased.
## Working Oath Research discount codes
| Code | Discount | Who | Conditions |
| --- | --- | --- | --- |
| `GRANT` | 20% off | new customers | New customers only. First order. |
| `GRANT15` | 15% off | everyone | No minimum. Applies to repeat orders. |
Both codes were tested against Oath Research's live checkout on 6 October 2026 and applied correctly. This site is an Oath Research deal page — it is paid nothing when you use a code, and there is no commission on either of them.
Use them at .
## Code check log
- 6 October 2026 — GRANT took 20% and GRANT15 took 15% off on a $195.00 sample cart; a made-up control code was refused.
- 5 October 2026 — GRANT took 20% and GRANT15 took 15% off on a $195.00 sample cart; a made-up control code was refused.
- 21 September 2026 — GRANT took 20% and GRANT15 took 15% off on a $195.00 sample cart; a made-up control code was refused.
- 17 September 2026 — GRANT took 20% and GRANT15 took 15% off on a $195.00 sample cart; a made-up control code was refused.
- 6 September 2026 — GRANT took 20% and GRANT15 took 15% off on a $195.00 sample cart; a made-up control code was refused.
### Page updates
- 28 September 2026 — The “Reach Oath Research Directly” section on the contact page now uses plainer words, with its facts unchanged.
## Oath's Testing Record
A discount is only worth taking if what's underneath it holds up. Oath Research publishes a certificate of analysis for every batch it ships, and the entries below are pulled from that archive as of October 2026. This log states what the archive states — nothing more.
- **518+** — batches tested (as of October 2026)
- **99.64%** — avg. purity (trailing 12 months)
- **287/518 (OCT 2026)** — certificates public (rest need login)
- **$0** — commission earned (on either code)
### Batch-Level, Not Lot-Level
Oath Research tests every batch it ships, not a sample from a production run. As of October 2026 the count sits at 518 and climbs weekly — no single figure holds for long, so treat “more than 500” as the durable version. Purity is measured by HPLC-UV; identity is confirmed by LC-MS. The average across the trailing twelve months is 99.64%. That is not an all-time figure and should not be read as one. Each result is filed against a specific batch number, not averaged into a vendor-wide claim with no paper behind it. The paper is the point.
### The Archive Is Partly Public
The certificate archive at [oathresearch.com/lab-results](https://oathresearch.com/lab-results) holds 518 entries as of October 2026; 287 of them can be searched by name or batch number with no account required. The other 231 need a login. That split matters more than the raw count: a vendor that shows nothing lets you take its word for it, and a vendor that shows everything is rare enough to be worth double-checking. Oath Research sits in between, with the open portion large enough to spot-check claims against real certificates rather than a summary page. This page links to that current archive location directly.
### A Money-Back Purity Guarantee
Oath Research refunds or replaces any product that doesn't meet its own stated specifications or purity — the testing claim and the remedy are tied together, not sold separately. No restocking fee applies. Approved refunds process in 5 to 7 business days, with a first response in 24 to 48 hours. That doesn't cover opened or used product outside those specific cases, which is standard across research-material vendors generally. It does cover transit damage, wrong items, non-delivery, and duplicate orders. The purity number on this page means less without a remedy attached to it; this is that remedy.
### Same-Day Dispatch, Documented
Orders in before 12:00 p.m. Mountain time on a business day ship that same day, by Oath Research's own stated cutoff. After that, or on a weekend, the next business day. Most orders move by 2-day business air, usually UPS. That's a dispatch guarantee, not a delivery guarantee — the carrier's transit time afterward isn't Oath's to promise, and this page won't round that up to “2-day delivery” the way marketing copy often does. Free shipping applies over $250. Tracking is real-time on every shipment, domestic only.
## Expired Oath codes
Codes that no longer apply at checkout, kept here for reference only. Each carries a date; nothing on this list is claimed to have been run, checked, or confirmed by this site.
| Code | Offer | Expired | Status |
| --- | --- | --- | --- |
| `DISCOUNT20` | 20% off sitewide | 2026-05-01 | Expired |
| `OATHRX10` | $10 off | 2026-02-19 | Expired |
| `NEWLAB25` | 25% off first order | 2025-12-05 | Expired |
| `FREESHIP100` | free shipping over $100 | 2025-10-11 | Expired |
| `BLACKFRI30` | 30% off, Black Friday | 2025-12-02 | Expired |
| `CYBER25` | 25% off, Cyber Monday | 2025-12-03 | Expired |
Two Oath Research discount codes are active right now. One takes 20% off a first order. The other takes 15% off any order, including repeat orders, with no minimum spend. Both were run against Oath's real checkout on October 6, 2026, and both worked exactly as listed here — nothing rounded, nothing estimated, nothing taken from a screenshot someone else posted.
This page also keeps a second list: codes that used to circulate but no longer work. That list is kept for reference only. It is not a claim that those codes were ever tested here, only a record of what is no longer accepted.
Oath Research sells research-use peptides with a batch-level certificate of analysis for every shipment. That is a separate fact from whether a discount code works, and this page keeps the two apart. Below: the codes, then why they matter, then the archive of what stopped working.
## What's Actually Live
Live means run against Oath Research's own checkout and recorded, not copied from a forum post or a coupon aggregator. On October 6, 2026, both codes above were entered into a real cart of research peptides at Oath's stated prices, with the total recorded in the check log below. A bogus code — a string made up to fail — was entered as a control and was correctly rejected as invalid. Both real codes were not.
The first code is limited to a customer's first order. It stacks against nothing else and applies once. The second has no such limit: no minimum order size, and it works whether this is a first order or a fifteenth. Oath's own site posts a standing 15% new-account offer — the second code matches that figure exactly and applies more broadly than a new-account-only offer would.
Neither code produces a discount on shipping by itself; shipping is a separate line, covered on the shipping page. Neither code requires an account beyond whatever account Oath's checkout already requires to complete a purchase. Nothing here is a coupon aggregator's guess. It is one checkout, one date, two results, written down.
## Why A Log, Not A Banner
Most discount pages assert. This one records. A code either reduces the total at checkout by the stated percentage, on the stated date, or it does not — and the only way to know which is to run it, not to advertise it.
That is the design decision behind this page: a dated result instead of a claim of freshness. A banner reading “up to 20% off, always current” tells a reader nothing about when anyone last checked. A log entry reading “checked 2026-10-06, 20% measured on a real cart” tells them exactly what was done and when, so they can judge for themselves whether it is still likely to hold.
This site earns nothing when a code is used — no commission, no referral fee, no payment of any kind from Oath Research or anyone else. That is stated here once and applies everywhere on this site. The two codes are shared because they work, not because using them pays this page.
## Before You Use One
Oath Research sells research-use material. It is not sold, marketed, or described here as a treatment, a supplement, or anything intended for human or animal use. A discount code changes a price. It changes nothing about how the product is meant to be used, and this page has no view on dosing, reconstitution, or protocols — nor does Oath Research's own support desk, by its own stated policy.
Check the expiration behavior before checkout, not after. The first-order code will fail on an account that has ordered before; that is not a bug in the code, it is the stated condition. If a code fails and the order in question is not a first order, that is very likely why.
Read the returns and shipping pages before ordering if either matters to the decision: Oath Research issues refunds or replacements when a product does not meet its stated specifications or purity, but it does not accept returns on anything opened or used, which is standard for research material and not specific to this vendor. The expired list on this page changes the same way a stale claim would: a code moves onto it once, at the point it stops applying, not on a recurring schedule advertised in advance.
## 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.
Shop Oath Research:
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This page is a dated log of Oath Research checkout codes, not a shop, not Oath, and not a review — check the date on any entry before trusting it.
© 2026 Oath Discount Codes. A checkout-code log for Oath Research, updated when codes change.