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Potassium (urine)
Reflects potassium intake and renal secretion
Also known as: Urine K,UK
Reference Ranges
Clinical Reference
25.0 – 125.0 mEq/L
Optimal Range
40.0 – 100.0 mEq/L
Varies with intake and aldosterone
Related Conditions
Hyperaldosteronism
High
Diuretic Use
High
Chronic Kidney Disease
High
Adrenal Insufficiency
Low
Dehydration
Low
Food & Lifestyle Recommendations
🍎 Food
Ensure adequate magnesium intake (nuts, seeds, dark leafy greens) to reduce potassium wasting.
🍎 Food
Include potassium-rich foods regularly: banana, potato, avocado, yogurt.
💡 Other
Review diuretic use with your doctor if urinary potassium is elevated.
Evidence-Backed Supplements
When High
-
Clinical rationale; replace potassium losses under physician guidance when urinary wasting is identified.
-
Moderate evidence; hypomagnesemia often accompanies and worsens renal potassium wasting.
Magnesium glycinate 200–300 mg elemental Mg/day Evening
When Low
-
Moderate evidence; magnesium deficiency impairs potassium handling and may underlie low urinary excretion.
Magnesium glycinate or citrate 200–400 mg elemental Mg/day Evening, before bed
Questions to Ask Your Doctor
- Should I be tested for aldosterone or kidney potassium wasting? High urinary potassium with normal intake can indicate primary hyperaldosteronism or Bartter/Gitelman syndromes.
- Could dehydration or adrenal issues explain my low urinary potassium? Low urinary K often reflects adequate retention; context of serum K and hydration matters.
Upload your blood test to see how your Potassium (urine) compares to reference and optimal ranges.
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