Free UK delivery for orders over £50
365 Day Returns
£20 off orders over £100 – code JUNE20
Free UK delivery for orders over £50
365 Day Returns
£20 off orders over £100 – code JUNE20
Free UK delivery for orders over £50
365 Day Returns
£20 off orders over £100 – code JUNE20
Free UK delivery for orders over £50
365 Day Returns
£20 off orders over £100 – code JUNE20
Free UK delivery for orders over £50
365 Day Returns
£20 off orders over £100 – code JUNE20
Free UK delivery for orders over £50
365 Day Returns
£20 off orders over £100 – code JUNE20
Free UK delivery for orders over £50
365 Day Returns
£20 off orders over £100 – code JUNE20

The patented Berkeley Life Nitric Oxide Test Strips provide a non-invasive, saliva-based method to monitor the body's conversion of dietary nitrates to Nitric Oxide, supporting cardiovascular health.

Size:

50 tests

Free sample each month
Pause or cancel anytime
365 day free returns
In stock. Next day delivery available.

Buy now, pay later from £11.25/mo with

Free UK shipping over £50, free returns.
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Key benefits

  • Measures the body’s ability to convert dietary nitrates to Nitric Oxide.
  • Helps monitor a crucial component for a healthy circulatory system.
  • Ensures reliable and accurate results.

The patented Berkeley Life Nitric Oxide Test Strips offer a non-invasive, convenient solution for assessing the body’s conversion of dietary nitrates to Nitric Oxide. These easy-to-use saliva test strips provide immediate results, allowing you to track your Nitric Oxide levels and make informed decisions about your dietary and supplement intake.

Nitric Oxide (NO) plays a crucial role in maintaining a healthy circulatory system. As a naturally occurring molecule in the body, Nitric Oxide helps regulate blood flow, blood pressure, and overall vascular health. However, age and environmental factors can diminish the body's ability to produce adequate levels of Nitric Oxide, making monitoring these levels increasingly important.

By regularly testing, you can ensure you are supporting your cardiovascular health effectively and maintaining optimal Nitric Oxide levels for a healthy, active lifestyle.

Berkeley Life is owned by Lifes2good, a family-owned business in Galway, Ireland, and their vision is to leave behind a world where Nitric Oxide is seen to be as just as fundamental to our wellbeing as hydration and exercise. They started in 2016 with a test strip and a keen understanding of the paramount benefits of adequate Nitric Oxide in our bodies. Today Berkeley Life is recommended by top healthcare providers across the country.

With our Healf Curation Process, we do the work for you. Shop with confidence knowing that every item has been tried, tested, and curated for you.

Learn more about each step—Brand Discovery, Expert Validation, and Community Testing—here.

Shipping

At Healf, we prioritize safe and fast delivery for all our customers. Our carefully selected couriers are Royal Mail and DPD.

UK standard delivery

Enjoy free standard delivery on orders above £50, this option usually requires 2-3 working days. If your order is under £50, this delivery option is available for £3.99.

Next working day

For when you need our products urgently, we offer next working day shipping for £5.99. For orders placed before 12.00, we will ship it the same day to ensure you receive your order the next working day.

International

International deliveries can take 7 working days, and up to 4 weeks. The cost is £22.99 for orders below £50, £49.95 for orders above.

Returns

If for any reason you are not satisfied with your order, we provide free 365-day UK returns for all our customers. To initiate your return, simply contact us at team@healf.com, and we'll send you a return slip and help arrange a collection. The item you return must be sent in the same condition as received and inside the original packaging. Once received, we will notify you via email.

For international returns, we unfortunately do not cover the cost. However, we work with an array of carriers and can offer self-posting returns for customers shopping from outside the UK.

Test any time to assess your Nitric Oxide levels. Do not consume anything 10 minutes before testing. Allow a minimum of 90 minutes after your supplement or nitrate-rich meal before testing.

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Frequently asked questions

Every product undergoes our Healf Curation Process. With it, you can shop confidently knowing that every item has been tried and tested before it reaches you. Our Healf Curation Process includes three key steps: Brand Discovery, Expert Validation, and Community Testing. Through these, we assess quality, ingredients, effectiveness, and more, ensuring that every product empowers your wellbeing.

The Healf Journal offers detailed insights into different aspects of wellbeing, as well as guidance, research, recipes, and more to help you invest in your personal wellbeing journey. You can also subscribe to our weekly newsletters for the latest updates at Healf and in the wellbeing industry. Subscribe via the sign-up block at the bottom of this page.

We love people who check ingredients as carefully as we do, so you'll find detailed information about the ingredients used on every product page (where applicable). If you see something you'd like to flag with us or have additional questions, please don't hesitate to get in touch—we'd love to hear from you.

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Every product undergoes our rigorous Healf Curation Process, ensuring you are always getting the best when it comes to your wellbeing.

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The Discovery

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Our approach keeps us at the forefront of wellbeing. With our global network of health professionals and AI-powered trend analysis, we curate the leading supplements, tools, and tech that pioneer the industry.

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Each product at Healf is carefully examined by a panel of industry specialists—including dieticians, personal trainers, psychologists, and sleep experts—to ensure it meets our high standards for quality, efficacy, and ingredient formulations.

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By collaborating with a dedicated group of customers who test and review each product, we ensure that only those truly beneficial to your wellbeing are offered here at Healf.