Frequently Asked Questions

Co-Test home tests help you monitor your health status, whether you're checking your vitamin D or ferritin levels, or screening for conditions such as celiac disease or a urinary tract infection.

If your test result does not match your symptoms, we recommend contacting a healthcare professional and seeking further evaluation and testing. If the result corresponds with clear symptoms, you may, depending on the test, either consult an appropriate healthcare provider or consider self-care measures first.

For example, you can start taking a vitamin D supplement on your own if your vitamin D levels are low. However, a low ferritin level may have an underlying medical cause that should be investigated by a healthcare professional.

Co-Test home tests can also be used to help monitor your levels and track changes over time.

A home test can be taken conveniently anytime and anywhere. Home tests are also significantly more affordable than comparable laboratory tests, while their reliability is, depending on the test, nearly or equally as high.

Co-Test home tests make it easy to take a more active role in managing your own health and well-being.

Home tests and laboratory tests are based on similar immunological methods that utilize antibodies. However, home tests are designed to be simpler and easier to perform, making them suitable for use by anyone.

Laboratory tests can provide more precise and detailed measurements, whereas home tests are intended to indicate whether a value falls within a sufficient range or whether the substance being tested is present in the body.

The reference value of 30 for the Co-Test ferritin test has been established to help identify significantly reduced iron stores in the body. Symptoms and their severity can vary considerably from person to person. However, a ferritin level below 30 is often considered a threshold at which symptoms may begin to have a noticeable impact on daily life for many individuals.

The purpose of the home test is therefore to help identify people whose low ferritin levels may be causing clear symptoms. In the future, the test may be further developed to include an additional, higher reference value, providing more detailed insight into ferritin levels.

The most common reason for an unsuccessful test is an insufficient sample volume. Please make sure to follow the instructions carefully and collect an adequate amount of the required sample.

A test may also fail if sample collection takes too long. For example, a blood sample may begin to clot in the collection tube before the test can be completed.

In some cases, test results may appear as faint or weak test lines. Always examine the test in good lighting conditions and, if necessary, view it from different angles to ensure the result is interpreted correctly.

Because the tests contain antibodies in a dried form, they have an excellent shelf life. Most of our tests can be used for up to two years from the date of manufacture.

You can always find the expiration date and shelf-life information for your specific test on the product packaging.

Our home tests are based on antibodies that react with the substance being analyzed in each specific test. As the sample fluid (saliva, urine, or blood) moves through the test, the dried antibodies dissolve and interact with the target substance, producing a result in the test area.

A control line located next to the test line or lines confirms that the test has functioned correctly and that the result can be interpreted reliably.

Co-Test home tests are designed to be as easy to use as possible. Each test kit includes clear and comprehensive instructions to guide you through the testing process.

In addition, we have created simple video tutorials that show each step of the procedure. By following these guides, you can perform the test quickly and with confidence.

You can view our testing video tutorials here.

All of our tests have been thoroughly validated using real samples under laboratory conditions. Our home tests undergo rigorous evaluation and are compared against equivalent laboratory-based tests to ensure their performance and reliability.

You can also find the accuracy of each test on the product packaging. For Co-Test home tests, the accuracy is always above 90%.

Results should always be interpreted based on the test line (T) in the test area. Make sure to examine the test in sufficiently bright lighting so that even a faint line can be seen.

With Co-Test home tests, any visible color on the test line indicates a positive result. The intensity of the color is directly proportional to the level being measured.

The Vitamin D test also includes a separate color chart that allows you to compare the intensity of the test line and estimate your result more accurately.

Always remember to check that the control line (C) is visible, as this confirms that the test has functioned correctly.