Vitamin D 25-OH, Total D2, D3-Blood Spot Lab Test Kit

Vitamin D is technically considered a “prohormone” created mostly by the body through skin exposure to sunlight. D vitamins are involved in a number of processes including modulation of the immune system, insulin sensitivity, regulation of hormones and neurotransmitters, and calcium absorption for the skeletal system. Vitamin D may also play a protective role in conditions such as diabetes, heart disease, and some cancers.

What Is Measured?

25-hydroxyvitamin D

Blood spot testing measures 25-hydroxyvitamin D, which is the best way to monitor vitamin D. D2 is found in fortified foods and D3 is produced in the body.

Related Symptoms

• Heart disease
• Immune disorders
• Fragile bone health
• Multiple Sclerosis
• Fatigue
• Depression
• Slow wound healing

Cancers including:

• Colon
• Prostate
• Breast

Vitamin D Levels

Optimal levels of Vitamin D are between 40 and 80 ng/ml.