Medically reviewed by Steffini Stalos, DO A vitamin B12 blood test is a reliable way to determine if you have adequate levels ...

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In this experiment we will be comparing levels of vitamin c in different fruits as well as with a vitamin c solution. *Tincture of iodine is a brownish liquid that becomes colorless when vitamin C is ...

Answer these questions to find out if you should consider taking a multivitamin. On most days, do you: Eat six to 11 servings of grains (breads, cereal, rice, pasta and other grain foods)? One serving ...

Some vitamin D tests may give misleading results despite progress made in recent years to improve the quality of these assays, according to the US Centers for Disease Control and Prevention (CDC).