ZRT – Vitamin D Home Test Kit


A simple, convenient and accurate test for screening Vitamin D levels.

You will received a kit sent to your home. A simple finger prick sample is collected at home and mailed to ZRT Lab. Results will be returned to you. 

Low Vitamin D
Vitamin D deficiency: Will you know when it’s too late? ZRT now offers Many physicians are responding to recent research linking a variety of disease states and general wellness to Vitamin D levels.

Vitamin D deficiency (levels measured below 32 ng/ml) does not have obvious symptoms and can increase your risk for more serious diseases including flu, cardiovascular disease, osteoporosis and multiple sclerosis. In addition, an increased risk for strokes, diabetes (types 1 and 2), depression, and breast and colon cancer are closely linked to low Vitamin D levels.

A few drops of blood from a quick and nearly painless nick of the finger are placed on a filter paper to dry. The dried blood spot sample is then sent to ZRT for analysis. With ZRT’s innovative blood spot test, there is no more wasted time and resources going to a lab for a painful blood draw.

Once ZRT has received your dried blood spot sample, your results will be sent to you in about a week. As you continue to monitor your Vitamin D levels, ZRT will generate a “history” test report with your newest test results compared with previous tests. This will enable your health care provider to recommend the right dose of supplementation, if necessary, and then track your treatment progress.

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The Vitamin D Home Test Kit detects deficiencies in Vitamin D (independently monitoring both Vitamin D2 and D3 status by LC-MS/MS) as a potential cause of health problems ranging from osteoporosis to cardiovascular disease.

California State residents:
CA State health law does not allow the testing of specimens collected or mailed from California without a written order from a health care professional licensed to prescribe in California (M.D.; N.D.; D.C.; D.O.; N.P.; and L.Ac.). If you are a California resident and would still like to order online, please visit: www.canaryclub.org, www.virginiahopkinstestkits.com or www.johnleemd.com. These sites will help you order online, with a health care provider licensed in the state of California.