Made it really to prove
Made it really to prove to myself that the NO supplement I was taking was actually raising my levels. Super quick and easy to use

Try our at-home blood test
Clinic-level accuracy on 38 key markers. Results and recommendations in just 72h.
25ct
Pre-order for 02/10/2026, delivery 2–3 working days once available
Healf Zone members get free next day delivery on all orders.
Key Benefits
Nitric Oxide Test Strips Tube provides a simple and non-invasive way to measure nitric oxide levels using saliva. Designed for at-home use, the patented test strips deliver immediate colour-based results, allowing you to check levels in less than 10 seconds without any equipment or preparation.
To use, place the strip on the tongue, press the ends together, and compare the colour result. This straightforward process makes the strips suitable for regular monitoring, whether used daily, before physical activity, or after consuming nitrate-rich foods or supplements.
Nitric oxide plays a role in blood flow, circulation, and cellular signalling. Levels can vary due to factors such as age, diet, lifestyle, and oral care habits. Regular testing helps provide insight into nitric oxide status, allowing informed decisions around nutrition and supplementation.



Made it really to prove to myself that the NO supplement I was taking was actually raising my levels. Super quick and easy to use
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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.