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Vitamin D Blood Spot Profile - ZRT Test Kit

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The Vitamin D home test kit will assist in identifying a deficiency in  Vitamin D levels, which is a potential cause of health problems.  In addition, it can also be used to monitor levels after vitamin D supplementation to confirm dosing.


Test Code:




Blood Spot


No fasting required. Specimen must be sent to lab by overnight mail Monday-Thursday only. Please read patient instructions very carefully and decide the ideal day for you to begin test.

Test Results:

3-5 Days once the lab receives the specimen. May take longer based on weather, holiday or lab delays.

Long known for its role in the prevention of childhood rickets and in the intestinal absorption of calcium, vitamin D has now been found to be important in protecting the body from an array of diseases. Disorders such as stroke, cardiovascular disease, osteoporosis, osteomalacia, several forms of cancer, some autoimmune diseases such as multiple sclerosis, rheumatoid arthritis, type 1 diabetes, type 2 diabetes, and depression have been linked to vitamin D deficiency. A major culprit of vitamin D deficiency is inadequate sun exposure. Vitamin D deficiency is a problem for people who spend much of their time indoors, or who live in colder climates.

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