Our test strips provide a quick, simple way to measure your body’s nitric oxide levels through saliva. Just place the strip on your tongue, press the ends together, and check the color—it takes less than 10 seconds and gives real-time insight into your NO status.

Nitric oxide is essential for healthy blood flow, energy, brain function, and heart health. Low levels are common, especially after age 40 or with stress, poor diet, or prescription mouthwash use. Testing helps you understand when your body needs support—so you can adjust your nutrition or supplement routine.

It's up to you but we recommend using the test strips regularly to begin with to understand your baseline levels and how supplementation influences your levels. Here are some suggestions - First thing in the morning - Before and after eating a nitrate-rich meal - Before and after workouts or activity - Before and after taking Berkeley Life Nitric Oxide Foundation This helps you spot patterns and fine-tune your habits for better nitric oxide production and performance.

Our patented strips have been shown to closely mirror nitric oxide trends found in blood plasma, offering a reliable and convenient way to track your NO status—right from home or on the go.

Yes— it takes just 10 seconds. There’s no special equipment needed. Each strip is individually marked for ease, and results are instant. It’s a no-fuss way to stay on top of your health. Each pack comes with detailed instructions and a color chart.