Vitamin D Assay
Genova Diagnostics
Sample type: Serum
Requires fasting: No
Phlebotomy is required for this test
Details
This test measures Vitamin D, a hormone produced in the skin during expose to sunlight or consumed in the diet. It is converted to its active form, calcitriol, in the liver and kidneys. Vitamin D helps regulate serum calcium and phosphorus levels by increasing intestinal absorption of calcium and stimulating tubular reabsorption of calcium. It also affects numerous other functions in the body.
- 25-hydroxyvitamin D
Estimated days for results: Results should arrive 21 business days after the lab receives samples.
21 business days
Before You Start
- Please read the provided test collection instructions carefully.
- Sample collection must be performed by a phlebotomist.
Day Before Collection
- Freeze the provided freezer brick for at least 8 hours before your blood draw.
Minimum age:
2
State restrictions:
Patient can't order this test if they are located in Hawaii, Puerto Rico, New Jersey, New York, or Rhode Island
