






Measure To Know Bundle (2 Blood Tests + Daily Essentials)
We believe that measuring is knowing. That’s why we created this subscription bundle to help you understand your vitamin levels before and during your supplement journey.
This bundle includes 2 blood tests and 1 Starter Kit for a subscription, giving you the tools to track your progress.
We recommend taking your first blood test before you start. In collaboration with the independent lab mijnlabtest.nl, your vitamin B12 and vitamin D levels will be tested from the comfort of your own home.
Once you've done the test, you can start with the Daily Essentials. You will receive refills every 6 weeks. After some time, you decide when it’s right to take the second blood test to see how your levels have changed. We recommend at least 3 months.
Enjoy 15% off the tests, 30% off the Starter Kit with this bundle.
Note: With your purchase, you’re subscribing to the Daily Essentials (€44 per 6 weeks). Pause or cancel anytime.
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Measure To Know Bundle (2 Blood Tests + Daily Essentials)





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Founded by Louise Lagendijk, The Core We Care is the result of her pursuit to empower women to take control of their health
Integrative medical doctor and former Harvard researcher dr. Louise Lagendijk founded The Core combining years of scientific research with a passion for preventive and integrative women's health. She founded The Core We Care to make smarter, cleaner, and more effective nutrition accessible to women and their families — without the pills, pressure, or complexity.











