Potassium (K)
Potassium is an electrolyte essential for the proper functioning of your heart, nerves, and muscles. It helps regulate your heartbeat and supports normal cell function.
Category: Metabolic Panel
Also known as: potassium, k, k+, serum potassium, kalijum
Reference range: 3.5–5 mEq/L (Source: ABIM)
Standard unit: mEq/L
High values may indicate
High potassium levels (hyperkalemia) may indicate kidney disease, Addison disease, or use of certain medications such as ACE inhibitors.
Low values may indicate
Low potassium levels (hypokalemia) may indicate use of diuretics, prolonged vomiting or diarrhea, or eating disorders.
Frequently asked questions
- What is a normal Potassium (K) level?
- A typical reference range for Potassium (K) is 3.5–5 mEq/L (source: ABIM). Reference ranges vary by laboratory, age, and sex, so always compare against the range on your own lab report.
- What units is Potassium (K) measured in?
- Potassium (K) is most commonly reported in mEq/L. Labs in different countries may use other units — you can convert between them with BloodId's blood test unit converter.
- Where do Potassium (K) reference ranges come from?
- BloodId uses ABIM standard reference ranges and educational information from MedlinePlus (see our methodology). Reference ranges still vary by lab, age, and sex, so always compare against your own report.
- Can I track Potassium (K) over time?
- Yes. Upload results from any lab and BloodId charts your Potassium (K) over time against its reference range, so you can see whether the trend is rising, falling, or stable.
Related biomarkers
Source: MedlinePlus, U.S. National Library of Medicine
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