Traditionally, hormone levels have been measured through lab tests involving blood, saliva or urine, but these methods are ...

Not long ago I received an urgent phone call from a patient, a 67-year-old investment broker, anxiously asking, "What's with this high potassium ... levels, included in many routine blood tests ...

You should have your doctor regularly check your potassium levels with a blood test. The ranges (in milligrams [mg] per deciliter [dL]) are: Ranges, however, may vary depending on the lab.