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.
Results. A vitamin B12 test measures the amount of vitamin B12 in the blood. The normal values listed here-called a reference range-are just a guide. These ranges vary from lab to lab, and your lab may have a different range for what's normal. Your lab report should contain the range your lab uses.