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GSE GSE How to obtain vitamin D

Measuring Body's VITAMIN D Blood Levels

CALCITRIOL [1,25(OH)D], the active form of VITAMIN D, DOES NOT provide a satisfactory indication of a person's VITAMIN D status - Its best evaluation and the “gold-standard”is obtained from the circulating CALCIDIOL [25(OH)D] level.

–    Recommended Testing Lab - Lab Corp in the US; if the test is done by Quest Diagnostics Lab, then divide your result by 1.3 to get the “real”number.

–   Ng/ml vs. nmol/l -ng/ml are the units of measure in the U.S., however, much of the world uses nmol/l. Test results measured in nmol/l, are multiplied by 2.5 to get ng/ml.

Normal vs. Optimal CALCIDIOL Levels - The “normal” 25(OH)Dlab range is between 20-56 ng/ml. This conventional range is really a sign of deficiency, and is too broad to be ideal. Dark-skinned, tropical agricultural workers typically have blood levels of ~ 60 ng/mL.

The OPTIMAL value of 25 (OH) D for EVERYONE (children, adolescents, adults and seniors) is 50-65 ng/ml.

–   Your VITAMIN D level should never be below 32 ng/ml;

–   A level below 20 ng/ml is considered seriously deficient - increasing your risk of as many as 16 different cancers, including breast and prostate cancer, and also auto-immune diseases, such as rheumatoid arthritis and MS.





With Cancer

Too High

<50 ng/ml

50-65 ng/ml

65-90 ng/ml

>100 ng/ml


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