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Potassium

Potassium keeps your heart rhythm, muscles and nerves working. Your body keeps it in a tight range, because both too little and too much affect the heart.

Reference range
3.5–5.0 mmol/L
Direction
A range, not a direction
01

Your reading

This app uses 3.5–5.0 mmol/L. Low potassium is common with vomiting, diarrhea, heavy sweating and diuretics. High results are often false: if the blood sample was hard to draw or sat too long, cells break and release potassium. A real high is usually linked to kidney function or medications like ACE inhibitors.

02

What may help

  • —Potassium-rich foods if it's low: potatoes, beans, bananas, spinach, avocado, yogurt
  • —Retesting quickly if it's high with no other explanation, in case the sample was damaged
  • —Taking potassium supplements only on a doctor's advice
03

When to talk to a doctor

If potassium is below 3.0 or above 5.5, or you notice palpitations or muscle weakness. A confirmed high level needs prompt attention.

04

Common questions

What is Potassium?

Potassium keeps your heart rhythm, muscles and nerves working. Your body keeps it in a tight range, because both too little and too much affect the heart.

What is a normal Potassium level?

Daygo uses 3.5–5.0 mmol/L as the reference range. This app uses 3.5–5.0 mmol/L. Low potassium is common with vomiting, diarrhea, heavy sweating and diuretics. High results are often false: if the blood sample was hard to draw or sat too long, cells break and release potassium. A real high is usually linked to kidney function or medications like ACE inhibitors.

How can I improve my Potassium?

Potassium-rich foods if it's low: potatoes, beans, bananas, spinach, avocado, yogurt. Retesting quickly if it's high with no other explanation, in case the sample was damaged. Taking potassium supplements only on a doctor's advice.

When should I see a doctor about Potassium?

If potassium is below 3.0 or above 5.5, or you notice palpitations or muscle weakness. A confirmed high level needs prompt attention.

Source: MedlinePlus (NIH): Basic Metabolic Panel. Reference ranges are standard adult intervals — your own lab may report a different range for your age, sex, or method. This isn't medical advice; always go by the range on your actual results and talk to a clinician about anything that concerns you.