Vitamin D Self-Test is a rapid cassette test for semi-quantitative determination of 25(OH)D concentration from a drop of blood collected from a fingertip . Designed for self-testing, meaning you can perform it yourself at home, it is completely safe and non-invasive. It's a quick, simple, and reliable way to check your vitamin D levels without leaving home! It doesn't replace a full laboratory test, but it is a valuable supplement and the first step towards informed health management.

It requires no specialized preparation or fasting, although to ensure consistent results, it is recommended to perform it in the morning, before your first meal. Thanks to its simple mechanism of action and rapid results—in just 10 minutes —you can assess your vitamin D levels across four reference ranges. The test is 94.4% accurate.

The test provides a preliminary diagnostic result and can be used to screen for vitamin D deficiency. It is a convenient and effective tool for health-conscious individuals and those who want to consciously monitor their vitamin D levels. It allows users to independently determine whether their vitamin D levels are within the normal range or whether they require medical consultation and potential supplementation.

Vitamin D level testing – for whom and when?

Regular testing of vitamin D levels is particularly recommended:

• people who lead a sedentary lifestyle and rarely spend time in the sun,
• pregnant and breastfeeding women,
• elderly people whose natural skin synthesis of vitamin D is reduced,
• patients with diseases of the skeletal, muscular or metabolic system,
• people with chronic diseases (autoimmune, cardiovascular).

Testing your vitamin D levels allows you to make informed decisions about supplementation, diet and lifestyle, and its results can help prevent many ailments and chronic diseases.

Vitamin D home test – how does it work and what does the result show?

The test works based on immunochromatography and the principle of competitive binding. After applying a blood sample, the result appears in the test window as a line, the color intensity of which is compared to the color chart included in the kit. The higher the concentration of 25(OH)D in the sample, the brighter the test line (T). The result should be interpreted according to four ranges:

• below 10 ng/ml – deficiency (may indicate serious deficiencies requiring urgent medical intervention);
• 10–30 ng/ml – decreased level (insufficient supply of D to the body);
• 30–100 ng/ml – normal level (optimal, not requiring supplementation);
• above 100 ng/ml – elevated level (may indicate a risk of overdose of supplements and requires consultation with a doctor).

A home vitamin D3 test is a convenient alternative to traditional laboratory testing . It allows you to quickly and discreetly check your vitamin D levels without having to make an appointment at a clinic, wait for results, or incur additional costs.

It's also an excellent solution for people who want to regularly monitor their vitamin D levels, for example, when taking supplements. Although the test doesn't provide an exact numerical value (like a laboratory test), its results are sufficient for a preliminary health assessment and can form the basis for further diagnosis.