ZRT Laboratory is pleased to announce an exciting new test for your clinical practice - Vitamin D (25-OH, Total) in blood spot by liquid chromatography/tandem mass spectrometry (LC-MS/MS).

Why test Vitamin D? Vitamin D deficiency is very common, particularly in northern climates with little sunshine. Vitamin D has been found to be important in protecting the body from a wide range of diseases, including cardiovascular disease, stroke, osteoporosis, osteomalacia, cancer, autoimmune diseases such as multiple sclerosis, rheumatoid arthritis, diabetes (types 1 and 2), and schizophrenia.

Until now, venipuncture blood serum has been the standard medium for testing Vitamin D. To overcome the issues of inconvenience to the patient and practitioner, ZRT has developed and refined Vitamin D testing in blood spots. A few drops of blood from a quick and nearly painless nick of the finger, placed on a filter paper to dry are all that is needed. This can be done at home, meaning no more painful venous needle sticks or the inconvenience of driving to a blood collection center.

How does the new blood spot Vitamin D assay compare with conventional venipuncture serum testing? ZRT has shown conclusively that this new blood spot testing method is quantitatively equivalent to conventional serum Vitamin D testing by LC-MS/MS.

For more information, see our product data sheet: Vitamin D Testing in Blood Spot. Updated 2009.

Learn more about ZRT's Accuracy in Testing Vitamin D.

More ZRT Laboratory on Vitamin D deficiency in the News

Dr. Elise Schroeder, ZRT Consulting Physician, interview with Daniel Davis on Beyond 50 Radio on Vitamin D Deficiency and Testing for It, 2/20/09.

Mark Newman, ZRT’s Assistant Lab Director, interview with Super Human Radio, on Responsible Vitamin D Supplementation, 2/3/09.

Channel 10 KGTV News, San Diego features ZRT Vitamin D test in blood spot: Vitamin D May be Useful in Cancer Battle.

Video: CBS Evening News, A Well-Rounded Diet, Katie Couric spoke to Dr. Jennifer Ashton about the risks of children having low Vitamin D... View Now