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Your Protein, Verified.


At Day One, we believe in complete transparency. That’s why every batch of our protein undergoes rigorous testing by an independent, third-party laboratory. These tests analyze protein content, fat content, and carbohydrates to ensure that what’s on the label is exactly what you’re putting into your body—nothing more, nothing less.

We don’t do shortcuts, and we don’t expect you to take our word for it. Enter your lot number (found on the bottom of your jar) below to access the verified test results for your specific batch. Because when you demand the best from yourself, you should expect the same from your nutrition.

3 STEPS TO VERIFY

Purchase any tub
of DAY ONE’s
ISOLATE

Scan the QR Code and
enter your tubs lot number
which can be found on
the botom of the jar

View the result
of your product
3rd party testing

Serial number lookup