What lab test do you order to assess Vitamin D levels?
The best lab test to assess Vitamin D levels is the “25 OH Vitamin D Level” test.
What Vitamin D level is considered deficient?
Ideal blood level: 40-70 ng/mL
Sufficient blood level: 30 ng/mL
Insufficient blood level: 21-29 ng/mL
Deficient blood level: 10-20 ng/mL
Severly deficient blood level: 0-10 ng/mL
How do you treat patients with Vitamin D levels considered less than optimal?
21-29 ng/mL: Recommend 50,000 IU of Vitamin D2 (Once per week for four months)
Less than 20 ng/mL: Recomment 50,000 IU of Vitamin D2 (Twice per week for four months)
I would also advise patients to maintain a daily dosage (over the counter) of 2,000 IU to 5,000 IU of Vitmain D3. Three months after beginning treatment, I would check up on my patient’s 25 OH Vitamin D level.