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Discover Your Most Fertile Days with a Simple Saliva Test

KNOWHEN® offers an innovative, original saliva-based ovulation test that simplifies understanding your fertility cycle. This easy-to-use, reusable home testing kit is FDA-cleared and designed for your convenience.

KNOWHEN® Saliva Ovulation Test

Regular price   $49.99 USD Sale price   $39.99 USD Save 20%

Clinically tested for 98.9% accuracy

  • Eco-Friendly and Reusable: Reduces waste compared to traditional ovulation kits.
  • Convenience: Portable and can be used privately at home.
  • Versatility: Suitable for women with irregular cycles or conditions like PCOS.
  • Included Tools: Comes with a carry case, cleaning cloth, and a fertility tracking app.


Say Goodbye to Messy Urine Tests! 👋


Buy once, use forever - just a tiny drop of saliva is all you need. No more expensive test strips or bathroom struggles!


Time It Right ☀️


Super simple: Use it first thing in the morning - yes, even before your coffee!

Pro tip: Morning breath actually helps - finally, a good reason to skip brushing! 😉


Just One Drop 💧


Easy peasy: Add a tiny drop of saliva, wait 5 minutes, take a peek.

Seriously, that's it! No bathroom trips, no waste, no mess.


Track Like a Pro 📱


Keep it going: Use our app to track your results - it's like having a fertility diary!

Watch your pattern emerge, no science degree needed. 🔍




Watch How Easy It Is! 🎥


A Historical Overview

The journey into understanding saliva's role in fertility tracking began in 1945, when Dr. George Papanicolau first noted microscopic crystal formations in cervical fluid. This phenomenon, known as ferning, is key to identifying fertile windows in the menstrual cycle.

Pioneering Research

In 1969, Dr. Biel Cassals, a Spanish gynecologist, extended this research to saliva. His groundbreaking presentation to the Barcelona Medical Board established that hormonal changes during the menstrual cycle influence the crystallization of saliva, which mimics the arborization effect seen in cervical mucus.

Hormonal Connections and Fertility

Estrogen, a hormone closely linked to fertility, modulates the salinity of saliva. As ovulation approaches and estrogen levels surge, so does the salinity in saliva. This increase causes saliva to crystallize in patterns similar to those in cervical mucus, which are detectable under a microscope.

 

FDA Approval and Clinical Validation

In 2009, the KNOWHEN® Advanced Saliva Ovulation Test received FDA clearance. Conducted by Dr. Hugh Melnick at the Manhattan Fertility Center, U.S. clinical studies affirmed the test's 98.9% accuracy. These studies demonstrated a significant correlation between the ferning patterns in saliva and actual ovulation, confirmed through sonographic examinations.

Global Recognition

Today, Hilin Life Products, Inc. holds patents in numerous countries and is a recognized leader in fertility and reproductive health research.

Learn more

Why Choose KNOWHEN®?

The Smart, Sustainable Fertility Solution

Non-Invasive

A simple saliva test that eliminates the need for urine strips, offering a clean and stress-free experience.

Accurate

Provides 98.9% clinically proven accuracy to pinpoint your most fertile days.

Reusable

Sustainable and cost-effective; no recurring purchases required, making it an eco-friendly choice.

Clinically Tested

FDA-cleared and validated by rigorous clinical testing in the United States for reliable results.

Non-Invasive

A simple saliva test that eliminates the need for urine strips, offering a clean and stress-free experience.

Accurate

Provides 98.9% clinically proven accuracy to pinpoint your most fertile days.

Reusable

Sustainable and cost-effective; no recurring purchases required, making it an eco-friendly choice.

Clinically Tested

FDA-cleared and validated by rigorous clinical testing in the United States for reliable results.

How To Use KNOWHEN®

Simple & Easy-to-Use: Unlike traditional ovulation tests, Knowhen's saliva test offers a hassle-free way to track your fertility. Just use the test each morning for quick, clean results—no need for messy or complicated urine samples. Our fertility tracker makes understanding your cycle straightforward and stress-free.

KNOWHEN® vs. Other Ovulation Test Brands

Features KNOWHEN® Urine Ovulation Strips
Reusable
Non-Invasive (Saliva)
Digital Readings
Tracks Hormone Levels
Eco-Friendly

KNOWHEN® Saliva Ovulation Test: Frequently Asked Questions

AWe’ve compiled the most common questions about the KNOWHEN® Saliva Ovulation Test to help you understand how it works, its benefits, and how to use it effectively for accurate and reliable fertility tracking.

The KNOWHEN® Saliva Ovulation Test works by detecting changes in estrogen levels through your saliva. As you approach ovulation, estrogen levels rise, which is visible in the pattern of salt crystals in your saliva. You use a reusable microscope to view your saliva on a test slide, interpreting the pattern to identify your most fertile days.

Yes, the KNOWHEN® test is clinically tested with an accuracy of 98.9%. It is a reliable tool for tracking ovulation and fertility windows, backed by scientific research and user testimonials. However, individual results may vary based on how consistently the test is used.

Yes, the KNOWHEN® test is designed to be reusable. Unlike traditional test strips, which are single-use, the KNOWHEN® device can be used repeatedly, offering a cost-effective and eco-friendly solution for ovulation tracking.

To track your ovulation cycle accurately, it’s recommended to test your saliva daily, especially during the second half of your cycle. This will help you monitor changes as you approach ovulation.

Yes, the test is easy to use. Simply collect a small sample of saliva, place it on the test slide, and view it under the provided microscope to interpret the results. The process takes just a few minutes each day.

Yes, the KNOWHEN® test is suitable for women with irregular cycles. Since it tracks estrogen levels rather than relying solely on menstrual timing, it can help women identify their fertile window regardless of cycle regularity.

Satisfaction Guarantee

We stand behind our products and services with a 100% satisfaction guarantee.

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