Anywhere you go, you gotta have  oneTM

Introducing On/Go One, the single, simple, grab-and-go COVID-19 antigen self-test. Whether you’re going to work, working out, or working it on the dance floor, you gotta have One. On/Go One delivers 98%* accurate test results in just 15 minutes. Plus, it’s covered by most insurance plans, making it as easy on your wallet as it is to use.  

If you’re looking for a test designed to get you back to doing what you love, this is the One.

Get yours now

Portable, powerful, palmable.

Your fast, reliable, testing-to-treatment solution for COVID-19

Test Details

  • Convenient, portable, on-the-go pack with a single test inside
  • 98%* accurate results in just 15 minutes
  • The On/Go award-winning, top-rated companion app walks you through the test to treat process step-by-step and allows you to share results on your own secure passport
  • Covered by most insurance plans (up to 8 tests per person per month)
  • Important information and access to telehealth doctors available in case of a positive result
  • Authorized by the FDA
  • Pretty cool to look at!

For in vitro diagnostic use only. Must be age 2+ to use this test.

* PPA: 93%, NPA: 100% (see IFU for more details)

Gotta have One

Accurate, fast, and proven

The On/Go One Test Kit

Palmable, portable box easily fits into pockets, bags, purses and other small spaces.

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Step 1

Wash your hands thoroughly

Step 2

Remove your CareStart™ COVID-19 Antigen test components from the box.

Step 3

Remove the test cassette and place it on a clean, flat surface.

Step 4

Remove your CareStart™ COVID-19 Antigen test components from the box.

Step 5

Locate the extraction vial and peel off the aluminum foil seal. keep the vial upright, and place it on the designated hole on package.

The On/Go App

Before You Test, Install the On/Go App

Our top-rated iOS and Android mobile app delivers an intuitive testing experience. With over 30,000 five-star reviews, the On/Go app provides rapid test results, tracks your testing history and lets you easily share results with those who need to know.

Get the app

Everything You Need to Know

View Product Updates

Together is Better

On/Go One: your all in One test-to-treat COVID-19 solution  - you’ve got to have One.

Gotta have One


The On/Go and On/Go One tests have not been FDA cleared or approved but have been authorized by FDA under an Emergency Use Authorization (EUA). These products have been authorized only for the detection of proteins from SARS-CoV-2, not for any other viruses or pathogens; the tests are only authorized for the duration of the declaration that circumstances exist justifying the authorization of emergency use of in vitro diagnostics for detection and/or diagnosis of COVID-19 under Section 564(b)(1) of the Federal Food, Drug and Cosmetic Act, 21 U.S.C. § 360bbb-3(b)(1), unless the declaration is terminated or authorization is revoked sooner.

The On/Go COVID-19 Antigen Self Test and the On/Go One COVID-19 Antigen Home Tests are lateral flow chromatographic immunoassays intended for the qualitative detection of the nucleocapsid protein antigen from SARS-CoV-2 in anterior nasal swab specimens directly from individuals within 7 days of symptom onset or without symptoms or other epidemiological reasons to suspect COVID-19

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is a solution like no other

By connecting testing with real time data to keep track of your family and their current status, you'll know you are ready to embark together on the next family vacation, take your child to his/her sporting events, or just be confident when you are visiting your loved ones.