What should my vitamin d level be. i'm a 56 year old female.

10-80ng/mL: Normal range is 10-80ng/mL per our lab. Anything under 20 is usually considered insufficient and treated. Primary source of Vitamin D comes from drinking fortified milk with some produced from sunlight exposure. Vitamin D supplementation can be taken if levels are low.

Depends on lab: All labs have different values for normal for their tests. A blood test result will be given with the normal range listed after it. Here is a great article on the subject. http://www.medscape.com/viewarticle/589256_7

Normal level: less than 20 is considered deficiciency, 20-29 is considered insufficiency, 30 to 80 is considered optimal. Above 80 is high