Vitamin D is a fat-soluble vitamin that is crucial for maintaining healthy bones and teeth, supporting the immune system, and assisting muscle function. Unlike most vitamins, the body can produce vitamin D when the skin is exposed to sunlight, making it unique in how it is obtained and used.

People who would benefit from testing their vitamin D levels include those with limited sun exposure, older adults, individuals with darker skin, those with conditions affecting nutrient absorption like celiac or Crohn’s disease, obese individuals, and people taking medications that impact vitamin D metabolism.
The best dietary sources of vitamin D include fatty fish like salmon, trout, and mackerel, which are among the richest natural sources. Fish liver oils, like cod liver oil, are also high in vitamin D. Small amounts are found in beef liver, cheese, and egg yolks. For those who prefer plant-based options, fortified foods are a good alternative; these include dairy and plant milk, orange juice, and certain cereals.
Vitamin D3 (cholecalciferol) is generally considered more effective than vitamin D2 (ergocalciferol) because it is more potent, stays longer in the body, and is more efficiently utilized. However, the choice between D3 and D2 may depend on dietary preferences, as D3 is usually derived from animal sources and may not be suitable for vegans, while D2 is plant-based.
Rapid Test
Blood
Our Vitamin D rapid test provides you with answers about whether you have sufficient levels of Vitamin D in your body or if you are suffering from Vitamin D deficiency. Vitamin D plays a crucial role in the immune system, muscles, and skeletal system, and its deficiency can also negatively affect your mental health.
If you’re interested in precise measurements, we also offer a lab test for exact Vitamin D levels. Additionally, many customers find it beneficial to also test for Iron Deficiency, Celiac/Gluten Intolerance, or explore our comprehensive lab tests including Vitamin B12, Nutrition, and Omega-3 Basic tests.
$ 19.99 USD
Add to cartLab Test
Blood
The GetTested Vitamin D Test measures your vitamin D levels to help assess your nutritional status. Understanding your vitamin D is crucial as it plays a significant role in bone health and immune function by influencing calcium absorption in the body. This lab test provides your exact vitamin D level.
For a more detailed assessment of your mineral balance, consider pairing this test with our Nutrition Test, which measures essential minerals such as sodium, potassium, calcium, and magnesium, along with iron, copper, zinc, and selenium.
$ 49.99 USD
Read MoreLab Test
Blood
GetTested’s Vitamin Test offers detailed analysis of key vitamins: B12, Folate (B9), D, E, and Coenzyme Q10. This test is particularly useful for individuals with dietary limitations or specific health concerns. People on plant-based diets, the elderly, and those with conditions affecting nutrient absorption, like Crohn’s disease, can significantly benefit from this test to identify potential deficiencies. Additionally, it’s helpful for anyone experiencing symptoms like persistent fatigue, weakened bones, or compromised immune function, which could indicate low levels of these essential vitamins.
If you’re also interested in assessing minerals, we recommend our Nutrition Test, which evaluates 8 essential minerals and crucial ratios between them.
$ 133.99 USD
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