Aldosterone

• Excessive bleeding
• Fainting or feeling lightheaded
• Hematoma (blood accumulating under the skin)
• Infection (a slight risk any time the skin is broken)
• Multiple punctures to locate veins

Factors that can affect aldosterone measurements include strenuous exercise, acute stress, and dietary salt intake.

Many medications can influence aldosterone levels, including diuretics, lithium, calcium channel blockers, ACE inhibitors, propranolol, NSAIDs and heparin.

Veins and arteries vary in size from one patient to another and from one side of the body to the other. Obtaining a blood sample from some people may be more difficult than from others.

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