Product Description
Most supplements ask you to trust the process. Berkeley Life gives you proof. If you're using any nitric oxide supplement — whether it's beet root, a NO booster, or Berkley Life product — these test strips tell you in 15 seconds whether your levels are actually where they need to be. That's not a small thing. Nitric oxide is the molecule that keeps your blood vessels relaxed and open, delivering oxygen and nutrients to working muscles. But you can't feel it working. Until now, you just had to hope.
Berkeley Life Nitric Oxide Test Strips are patented, saliva-based indicators that measure salivary nitrite levels — the proven precursor to nitric oxide in the bloodstream. Clinical research has confirmed that strip readings closely mirror nitric oxide trends found in blood plasma, which means you're getting a real signal, not a rough guess.
Choose from 2, 4, or 10 tube packs. Individually sealed strips inside for daily use. The process takes 15 seconds: place the strip on your tongue for 5 seconds, fold it in half and press gently for 10, then unfold and match the color to the scale on the package. Green means your levels are in a good range. If they're not, you know to adjust — more nitrate-rich foods, a supplement dose, or a timing change before your next effort.
How to Use Berkeley Life Nitric Oxide Test Strips
Establish your baseline: Test first thing in the morning before eating or drinking anything. This gives you your starting point and shows where your levels sit before any intervention.
Test around supplementation: Take a reading before and 90 minutes after your nitric oxide supplement to confirm it's working. If levels don't shift, it's a signal to adjust your dose or timing.
Test before training: Use a strip 60–90 minutes before a key workout or race to confirm your NO levels are elevated. Don't experiment on race day — know your protocol works before it matters.
Important: Don't eat, drink, or use mouthwash for at least 10 minutes before testing. Antiseptic mouthwash is particularly disruptive — it kills the oral bacteria that help convert dietary nitrates into nitrite, which can falsely suppress your reading.
Supplement Facts
| Amount Per Serving | ||
|---|---|---|
| % Daily Value* |
* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
** Daily Value (DV) not established
Always Happy Promise: Don't like a product? Tell us within 30 days of receipt and we'll make it right and make you happy. Here at The Feed, we want you to love your experience and the sports nutrition products you purchase. If, for any reason, you are not satisfied with your nutrition specific purchase, tell us.
We do not accept returns on food items that have been opened, but we will issue a store credit if you are unsatisfied. In the event of a return, you must first contact us before sending back a return shipment.
Consumable products over $40 receive a 50% store credit. This includes specialty nutrition products such as ketones or supplements/vitamins.
Berkeley Life Nitric Oxide Test Strip Pack FAQ's
Everything you need to know about Berkeley Life Nitric Oxide Test Strip Pack.
The strips measure salivary nitrite levels — the proven precursor to nitric oxide in your bloodstream. Clinical research confirms that saliva readings closely mirror nitric oxide trends found in blood plasma, so you're getting a real, actionable signal in 15 seconds rather than a rough guess.
Place the strip on your tongue for 5 seconds, fold it in half and press gently for 10 seconds, then unfold and match the color to the scale on the package. Green means your nitric oxide levels are in a good range. The whole process takes 15 seconds.
Test first thing in the morning before eating or drinking anything to establish your baseline. Then test before and 90 minutes after taking your nitric oxide supplement to confirm it's working. Before a key workout or race, test 60–90 minutes out to make sure your levels are elevated when they need to be.
Yes. These strips work with any NO-boosting protocol — beet root powder, standalone NO boosters, or Berkeley Life's own supplements. If you're taking anything intended to raise nitric oxide, these strips tell you whether it's actually working for your body.
It depends on how actively you're monitoring. The 4 or 10-pack works if you're testing daily, tracking how diet and supplementation affect your levels over time, or dialing in your pre-race protocol across multiple training sessions.