Track nitric oxide levels from home.

Quick, convenient, and clinical-grade test to monitor your nitric oxide levels for optimal health. Nitric Oxide plays a vital role in cardiovascular function, physical performance, healthy aging, and overall well-being.

Nitric Oxide Test Strips

You are not imagining it.

Your body may be asking for more fluids before you feel seriously thirsty.

THE TEST

A clear answer, at home.

FSH is the hormone that rises as your body moves through menopause. This test reads it — so the changes you've been feeling have something measurable behind them.

The same biomarkers used in clinical settings.

Nitric Oxide

Responsible for vitality and blood flow.

LEARN MORE

Easy to use, quick to read, and discreet.

Designed with clinical-grade methodology for dependable results.

NITRIC OXIDE biology

Nitric oxide works
across multiple systems. 
Its role doesn’t stop
at circulation.

1 signaling molecule

5 key

systems

Step 1

Sample Collection

Step 2

Sample Deposit

Step 3

Compare Colors

Nitric Oxide Test User Manual

This product is not intended for the diagnosis, cure, mitigation, prevention, or treatment of a disease or condition. The product is not a substitute for professional medical advice, clinical diagnosis, or treatment.

James M.

★ ★ ★ ★ ★

Verified Buyer

These little nitric oxide test strips are great to have around. If you are an athlete and or supplement with Arginine and citruline supplements, these are fantastic to see how your Nitric Oxide levels are. I like that they come in individual packets instead of one big tub. I feel the individual packaging makes the strips last longer. For the price I think it's reasonable.

Ally P.

★ ★ ★ ★ ★

Verified Buyer

These test strips are easy to use. I wanted to know how certain changes in exercise, diet, time of day, etc. affects my nitric oxide levels, so I can make corresponding decisions on changes that might need to be made. These make it easy - just get a sample of saliva, and wait for the time indicated, and compare to the reference color.

Janet T.

★ ★ ★ ★ ★

Verified Buyer

Each strip is individually packaged, ensuring convenience and hygiene with every test. The process is quick and straightforward—using saliva to measure nitric oxide levels—and the results are easy to interpret.

Gerhard Hardt

★ ★ ★ ★ ★

Verified Buyer

Easy to take the test and get the result

Customer

★ ★ ★ ★ ★

Verified Buyer

Individually packaged. Nice!

Ren

★ ★ ★ ★ ★

Verified Buyer

Ordered these test strips as my partner was worried about our nitric oxide levels. I have used test strips like these in the past for testing Kombucha pH and "Keto strips" so I knew what to expect, dip the sample, wait some period of time and then compare to the shade chart on the bottle. I found it a little strange that the sample method requires you to spit in a non-supplied container (or freshly washed finger tip) as I worry about contamination and erroneous results but that appears to be normal for these nitric oxide test across brands––some go as far as to suggest you stick it in your mouth for awhile (though the instructions with this brand explicitly discourage that). I appreciated that each strip was individually packaged with a silica packet as the strips that are sold in bulk in jars go bad quickly and trusting the results can be questionable. My results show as "depleted", would be great if there were more numerical analysis that I could share and verify with a doctor. I will need to supplement to detect the max end of the scale.

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Questions

The ones we hear most often.

The test measures nitrite levels in your saliva, which directly reflect your body’s nitric oxide (NO) availability. Nitric oxide is a vital molecule that supports blood flow, cardiovascular health, exercise performance, and more. By assessing nitrite levels, the test offers an easy, non-invasive way to monitor your NO status in real time.

The test uses a simple biochemical reaction where nitrite in your saliva reacts with specific reagents on the test pad, producing a color change. The intensity of the color correlates with the amount of nitric oxide available in your body. This proven method is based on decades of scientific research and is widely used for nitric oxide evaluation in both clinical and wellness settings.

If your results show low nitric oxide availability, you can take steps to improve it. Eating nitrate-rich foods (like leafy greens and beets), staying physically active, maintaining good oral health, and managing stress all help boost nitric oxide production. Regular testing lets you see how these changes impact your levels, helping you fine-tune your approach for better results.

Nitric oxide is a signaling molecule that relaxes blood vessels, improves blood flow, and helps deliver oxygen and nutrients throughout the body. It plays a role in cardiovascular health, exercise performance, immune defense, sexual wellness, and healthy aging. Low nitric oxide levels can contribute to fatigue, poor circulation, and reduced resilience, making it important to monitor and maintain optimal levels.

Testing frequency depends on your health goals. For lifestyle optimization—such as adjusting diet, exercise, or supplementation—daily or every-other-day testing provides the most insight into how habits affect your nitric oxide levels. For general wellness tracking, weekly or monthly testing may be sufficient. Consistency is key for spotting trends and making informed decisions. Athletes should test more frequently.