Blood serum concentrations are much lowerâonly about 0.4% of the body's potassium is found in blood serum. As noted above, hypokalemia can be caused by the sudden uptake of potassium ions from the bloodstream by muscle or other organs or by an overall depletion of the body's potassium.
Early symptoms of the flu may include conditions such as excessive or sudden fatigue or body aches and chills, according to Healthline. While fatigue can be an early symptom of a cold, in people who have the flu, the fatigue is much worse.
The First Signs of Cold And Flu. From the tell&dash;tale tickle in your throat, to a sudden fever, there are a number of signs that signal a cold or flu. This article describes the most common symptoms for each and explains how these symptoms may affect you.