Two vitamin D studies were published recently, both utilizing ZRT's testing in dried blood spot. Dried blood spot samples are well suited for research applications because they are equivalent to serum but have the advantage of ease of sample collection, shipping, and storage, which doesn’t require any refrigeration or biohazard labeling. Also, samples are easily identified by details that can…

Tags: Hormone Balance, Vitamin D, Research, Blood Spot Testing


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New Research on Vitamin D Using Dried Blood Spot Testing

An FDA-approved testosterone gel was shown to significantly increase risk for adverse cardiovascular, respiratory, and dermatological events in men 65 or older who had impaired mobility and increased health risks. This is according to a recent study published in the prestigious New England Journal of Medicine (NEJM) that casts a shadow on the common use of testosterone therapy in older men for…

Tags: Saliva Testing, Blood Spot Testing, Testosterone, BHRT, Hormone Balance


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Testosterone: Elixir or Dangerous Drug?

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