There's a very high chance you'll find a working Functionalab promo code right now. The best code to try is WELCOME15 for 15% off. It worked at checkout this week. There are 17 more on this page, ranked by real shopper results.
How often Functionalab codes work
Each bar is one week of real shopper results: the greener the bar, the better the chance a code worked that week. Paler bars carry limited data.
| Discount | Source | Freshness | Promo code |
|---|---|---|---|
| $25 off Function | SourceYouTube video | Freshness | TREY25 |
| $25 credit toward membership | SourceInstagram post | Freshness | MCKENNAA25 |
| $365 for 160+ lab tests a year | Freshness | VIRAL25 | |
Found by Wethrift4 months ago Weekly history Loading… | |||
| $135 off Function subscription | SourceInstagram post | Freshness | JFRYS10 |
| $25 credit toward membership | SourceYouTube video | Freshness | BEWELL25 |
| 10% off Function membership | SourceInstagram post | Freshness | EMILYS100 |
| $25 | SourceInstagram post | Freshness | MICHELLEW25 |
| $100 | SourceInstagram post | Freshness | NATALIEP100 |
| Promo code: GOODASGOLD100 | SourceYouTube video | Freshness | GOODASGOLD100 |
| $100 off membership | Freshness | GGE100 | |
| $100 credit for first 1000 customers | SourceYouTube video | Freshness | BASIC |
| 15% off Micronutrients test | SourceInstagram post | Freshness | CAROLA15 |
| Skip the 100K waitlist, get 50% off | SourceYouTube video | Freshness | COLIN100 |
| 25% OFF Food Sensitivity Test Kits | SourceStore's ad | Freshness | 25FOOD |
| 15% OFF Colon Cancer Test Kit | SourceStore's ad | Freshness | TEST15 |
| 10% off at Functional.Co | SourceYouTube video | Freshness | SAMPAKPAK |
| $365 for the year | SourceTikTok video | Freshness | FUNCTIONDAY |
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About this page
Introducing a more honest way to find coupon codes
Every code has a history, and we track it
Codes fail for boring reasons: they expire, they only cover one category, they only apply to a first order. Calling any of them "verified" would be a guess dressed up as a fact. We publish the chance instead, built from checkout data and shopper answers, and we track it over time.
Likely not workingMixed resultsHigh chance of working
You'll find one of these charts on every code we list, tracking how it has performed over time.
When there is nothing worth trying, we say so
When we don't think there is a working code for a store, we say so right at the top of the page, before you spend time scrolling.
Good chance right now78%
Nothing likely right now9%
A code that works at breakfast can be dead by lunch. Nobody can promise otherwise, so we don't stamp anything here as "working" or "verified". We tell you the chance of a code working instead, based on real shopper feedback and data, and when the chance is poor we say that out loud.
