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COVID Test Basics

Are your tests qualified to be reimbursed by insurance?

Yes, our test is qualified as we are authorized by the FDA under emergency use authorization (EUA). You can find our authorization letter on the FDA website under "CareStart COVID-19 Home Test" where we are authorized under "other brand name." If you click into the EUA letter for CareStart, you can find On/Go on page two, footnote 5.

If needed, the UPC code for On/Go is 86000619166

Effective Jan 15, 2022, over-the-counter COVID-19 tests, like On/Go, that are approved under the FDA emergency use authorization (EUA) are eligible to be reimbursed by your private insurance. Learn more and fill our a form to get your test reimbursed here.

What is a rapid antigen test?

A rapid antigen test is a tool that identifies proteins of the virus, called antigens. A positive test result will occur when the virus is “live” and replicating, meaning the test taker is able to transmit it to other people. Because of this, rapid antigen tests are a helpful tool to figure out if you’re actually at risk of spreading COVID-19. Plus, unlike PCR tests which can take up to 3 days to get results, rapid antigen tests, like On/Go, provide results in as little as 10 minutes because all the pieces needed for analysis are in the test itself! Learn more about what an antigen test is on our blog, here

Who should use an antigen test?

Individuals aged 14 or older can perform the test directly. Adults can help perform the test for children aged 2 or older. The test can be used for individuals with or without symptoms, as often as you’d like.

What are common symptoms of COVID-19?

Symptoms of COVID-19 may appear 2-14 days after exposure and may include fever, cough, shortness of breath, fatigue, muscle or body aches, headache, loss of taste or smell, sore throat, congestion, or a runny nose, nausea or vomiting and diarrhea. It is also possible for someone infected with COVID-19 to have no symptoms.

When does my test expire? Why does my expiration date seem so soon?

Currently, the test expires on the last date of the month printed on your box (i.e. January 2022 means January 31, 2022). However, with medical products under EUA, such as On/Go, the FDA, after close studies, grants rolling expiration extensions. We expect the expiration date to be extended before the end of January and another expiration extension  again early in spring. We will continue to closely update this page as well as our website when the expiration date gets extended.

Does the On/Go test work with COVID-19 variants?

Yes! On/Go can be used to detect the antigen proteins from all major known COVID-19 variants of concern including Delta. When new variants arise, we rigorously perform tests to ensure the variants do not affect the performance of the test. Read our letter on our variant study here.

Where can I get an On/Go test kit?

The On/Go test is now available. Visit our shop to get tests delivered to your home. You can also find our tests on Amazon, or at your local Walgreens.

Can you pay for On/Go tests with an FSA or HSA?

Yes, On/Go is FSA eligible. COVID tests are approved medical expenses under IRS rules.  Save your receipts for your taxes and/or contact your program administrator for more details.

Are tests returnable?

Please note, our items are non-returnable, but if an item arrives damaged or defective, you may request a refund or a placement.

The App

Are you selling my data?

No, we are not selling you data. Protecting your private information is our priority and we do not sell, rent, or lease user information to third parties. Here is a link to read more in our privacy policy:

How do I download the On/Go app?

You can download the On/Go app by searching “On/Go” in the Google Play or Apple App stores or by scanning the QR code on the box.

Do I need to use the On/Go app to take the test?

The On/go app should be used to complete your test with confidence! Think of the On/Go app as your trusted side-kick. The app provides clear, illustrated step-by-step instructions from opening your test all the way through result interpretation, taking the guesswork out of testing and helping ensure your test and results are valid. By completing tests with the On/Go app, you can quickly share your results with friends and keep all your results organized in a single place, allowing you to easily view the testing history of you and your loved ones. For new testers and experts alike, the On/Go app allows for an extremely easy way to test for COVID-19.

Can I use my phone while I’m waiting for results?

While you’re taking the test and following the illustrative instructions, you should not close the On/Go app. Think of it as a 10 minute break from scrolling.

What do I do if my app won’t open?

Please make sure you are running the latest version of the app. First, uninstall the version of the app on your phone and then install the latest version. Search for On/Go in the Google Play or Apple App store and download the latest version. Older devices and operating systems may be incompatible with the On/Go application.

My app shut off in the middle of the test. What should I do?

Please open the app again as soon as possible. If you are at a step that can be continued, you will be able to continue where you left off. If this is not the case, you will need to start a new test.

What happens if I wait longer than 10 minutes to take a picture for results?

Once you apply your sample to the sample well, the app will begin a 10 minute timer. After the first timer is complete, your results are ready to be interpreted. You will have 5 minutes to take a picture of your results, shown on the screen through another timer. If you wait longer than 5 minutes, the results are not valid (and may provide false negative or false positive results) and you will need to start a new test. 

Why do I have to provide all of my information?

The information you provide is kept in order to report to public health authorities, where appropriate. Per CDC guidelines, certain federal and state regulations mandate reporting of test results to appropriate agencies. Privacy is of utmost importance to us. All data is encrypted and not shared with any other third parties.

Taking The Test

How do I test myself?

Testing yourself is easy, even if you’ve never completed a COVID-19 test before. All test contents are in the box--the only thing you need is a smartphone to download the On/Go app. Simply open up your app and you will be provided with real-time, illustrated step-by-step instructions, which are also included in every test box.  You’ll have your results in no time. It’s as easy as "tap, swab, snap."

​​What are the known and potential risks and benefits of the test?

Potential risks include:

  • Possible discomfort or other complications that can happen during sample collection
  • Possible incorrect test result

Potential benefits include:

  • The results, along with other information, can help you and your healthcare provider make informed recommendations about your care
  • The results of this test may help limit the potential spread of COVID-19 to your family and others in your community

Does the test hurt?

No! The On/Go test uses a lower nasal swab, not the “brain-tickling” swab you ​​may associate with COVID-19 tests. You only need to insert the swab less than ¾ of an inch into your nose, which can be seen by following the simple instructions provided on the On/Go mobile app. While it might tickle, it should not hurt. If you feel pain, please stop the test and seek advice from a healthcare provider. 

How long does it take to get results?

You’ll have your results quicker than you think. On/Go Self-Tests provide results in 10 minutes. You should check your results after 10 minutes and no longer than 15 minutes after sample application. 

The picture in Step 2 of the instructions looks like the tray requires the removal of a cover. If I don’t have a cover, is something wrong?

Everything is ok. Tests sealed on the box flap have individually sealed components (swab, test, vial) in the tray. No cover on the tray is necessary.

How many tests come in a pack?

Depending on the box you purchase, there will either be 2 or 20 tests (and swabs, caps, and vials) included. Besides the items in the box, all you need is a smartphone and you’re ready to take your test!

How long should people wait between taking On/Go Self Tests?

The tests should be administered twice over two or three days, with 24-48 hours between tests.

What is included in the box?

Depending on what you purchased, there will be 2 or 20 tests included in the box. Each test comes with everything needed to perform a test: a vial, cap, swab, and test device. The only other thing you need is a smartphone to get started.  


How do I know if I'm positive or negative?

After completing all the steps on the On/Go app, your results will be interpreted as positive, negative or invalid. 

  • A negative result (COVID-19 Not Detected) will show only a pink or red line next to the “C” on the test device but no other lines.
  • A positive result (COVID-19 Detected) will show a pink or red line next to the “C” on the test device AND a purple line next to the “T.” The purple line may be very faint.
  • An invalid result can occur either due to an invalid barcode or the absence of a colored line next to the “C” on the test device.
What happens if I get a positive result?

If you get a positive test result, you should self-isolate at home and avoid contact with others, per CDC recommendations, and follow care instructions from your healthcare provider and local health department. There is a very small chance that this test can give a positive result that is wrong (a false positive result). Your healthcare provider will work with you to determine how best to care for you based on your test result(s) along with your medical history, and your symptoms. If you have an emergency warning sign (including trouble breathing), call 911.

What happens if I get a negative result?
  • A negative test result means that proteins from the virus that causes COVID-19 were not found in your sample. It is possible for this test to give a negative result that is incorrect (false negative) in some people with COVID-19. This means you could possibly still have COVID-19 even though the test is negative. The amount of antigen in a sample may decrease the longer you have symptoms of infection. In symptomatic people, specimens collected after you have had symptoms for more than five days may be more likely to be negative compared to a molecular assay.
  • If you test negative and continue to experience COVID-19 like symptoms of fever, cough and/or shortness of breath, you should seek follow up care with your healthcare provider. For example, your healthcare provider may suggest you need another test to determine if you have contracted the virus causing COVID-19. If you are concerned about your COVID-19 infection status after testing or think you may need follow up testing, please contact your healthcare provider.
What do I do if I receive an invalid test result?

In some rare cases, you may get an invalid result. If this happens, you will need to retest with a new test or consult a healthcare professional. If you have symptoms, you should self-isolate at home and avoid contact with others prior to re-testing. 

What is the barcode on the test for?

The unique barcode on your test device contains essential information to ensure test validity. In the event the barcode is not valid for any reason, you will be presented with a final screen indicating an invalid result. When you are prompted to take a photo of your test, it helps ensure that the test is valid and not expired.

How do I dispose of my test?

You can dispose of all used test kit components and patient samples in your household trash.

Will this be acceptable for cruise line requirements? Is On/Go accepted by European countries?

As rules as constantly changing, we recommend looking up rules at the destination country website for the most up to date information.  A great resource is:

Testing, Vaccines & Variants

Do I still need to get tested if I'm vaccinated?

Vaccines are great, but testing, like the On/Go Self-Test, will remain a key tool to keep communities safe and defeat COVID-19 as fast as possible. Independent of vaccinations, testing is a useful snapshot of the spread of the disease in communities.

Will vaccines cause a false positive?

No, your vaccine will not affect the results of the test. While the vaccines target the spike proteins of the virus, the On/Go test looks for the nucleocapsid protein.

Still need help?

Email our team with any questions and we’ll get right back to you.

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