STEP 01
Collect saliva
Spit into a clean, dry container, or gather saliva on a clean fingertip. Don't put the strip in your mouth.
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.
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
1 signaling molecule
5 key
systems
Practical guidance
Easy to use.
Easy to understand.
Everything you need to take the test, understand the result, and know what to do next.
Depleted
0.1 mg/dL
What it means
The lowest band on the key. Diets light on leafy greens push this down, and so can mouthwash or a recent course of antibiotics.
What it doesn't mean
This is a reading from one saliva sample, not a measure of your health. It doesn't diagnose anything.
What to do next
If you want to move the number, nitrate-rich foods are where the insert points. Test again after a few days of eating differently.
Low
0.5 mg/dL
What it means
Below the band the key marks as adequate. Your body is producing some nitric oxide, just not much at the moment you tested.
What it doesn't mean
One low reading isn't a baseline. Levels move quickly with what you've eaten and how recently.
What to do next
Worth retesting at the same time of day across a few days before you read anything into it.
Adequate
1.5 mg/dL
What it means
The target band on this key for general wellbeing.
What it doesn't mean
Landing here says what the strip read, not how you feel or perform. It isn't a health score.
What to do next
Nothing to change. If you train seriously, the key sets a higher band above this one.
Optimal
3.0 mg/dL
What it means
The highest sustained band the key marks, and the one it points athletes toward.
What it doesn't mean
A reading here doesn't predict anything about performance. The strip reports a level in saliva and nothing beyond it.
What to do next
Keep doing what you're doing, and test at the same time of day so readings stay comparable.
Spike
10.0 mg/dL
What it means
A short-term peak, usually one to two hours after nitrate-rich food or a supplement. The insert describes this as a safe, temporary rise that settles back to baseline on its own.
What it doesn't mean
It isn't your usual level. Testing straight after beetroot juice or a supplement will land here and tell you very little.
What to do next
Test again later in the day, before food, to see where you actually sit.
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.
voices
Real people. Real clarity.
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.
IN THE BOX
Everything you need.
A look inside the kit, and how it works.
BUNDLES
Pairs well with
Connect the dots with complementary tests our customers often reach for — with savings to match.
Nitric Oxide Test Strips
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.
Aquanox-16 Water Test Strips
Clear water can still carry things worth knowing about, like lead from older pipes or nitrate in a well. Aquanox-16 checks 16 of them in 30 seconds, right at the tap. If anything reads high, you’ll know exactly what to do next.
Nitric Oxide Test Strips
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.
Petnox-10 Pet Urine Test Strips
Monitoring dog and cat urine can provide essential insights into a pet’s health and help diagnose diseases.
Questions
The ones we hear most often.
LEARN
Care to know.
Know to care.
We believe sharing knowledge is a form of care — knowledge that guides us to look after ourselves and the people around us. Read, watch, or listen at the depth you want.
Nitric Oxide 101 - How to Boost Your NO Levels
Best Foods and Supplements To Boost Nitric Oxide Naturally
How Nitric Oxide Supports Blood Flow and Endurance
Boosting Nitric Oxide for Better Energy, Stamina, and Hormonal Balance
How Does Nitric Oxide Support Reproductive Wellness?
Can Mouthwash Affect Your Nitric Oxide Levels?
How to Use Your At-Home UTI Test.
Reading Your FSH Results with Confidence.
Clinical Science Behind At-Home Testing.
The Diagnox Story: Care Starts at Home.
Women's Health: Questions Worth Asking.
Understanding Biomarkers in Plain Language.
