San Francisco weather essentials. In San Francisco, if you donât like the weather, just drive a few miles. The temperature at both ends of the mile-long Golden Gate Bridge can be 20Â°F different. Since a cityâs average temperature for the year is not helpful to travelers, here is a general breakdown of what to expect.
Vitamin D Tests. One of the more common vitamin and mineral blood tests is the vitamin D test. A vitamin D deficiency or excess can lead to problems such as bone malformation, bone weakness and improper calcium metabolism.
Vitamin D Testing. The most accurate way to measure how much vitamin D is in your body is the 25-hydroxy vitamin D test or 25(OH)D test. Vitamin D changes into an active form of the vitamin in the kidney and can be measured through a blood test. The normal range is 30.0 to 74.0 nanograms per milliliter (ng/mL).A lower level indicates vitamin D deficiency, which you should discuss with your doctor.he Vitamin D Council also recommends testing your vitamin D level again in 3 months if you were found to be insufficient or deficient on your first test. You can make changes in your sun exposure to increase your bodies production of vitamin D and/or take vitamin D supplements.