Berkeley Life Test Strip Tube

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.

Each tube contains 25 individually sealed strips — a month of regular testing at 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.