Potassium
Bladder and kidney healthPotassium is a crucial electrolyte for heart, nerve, and muscle function.
It maintains proper cell electrical potential and helps regulate blood pressure. Imbalances can cause dangerous heart rhythm disturbances.
Why this matters
Blood potassium levels reveal how well your body maintains heart, nerve, and muscle function. Low potassium can cause muscle weakness, cramps, twitching, constipation, and dangerous heart rhythm disturbances, while high potassium can lead to muscle weakness, tingling, nausea, and potentially fatal heart rhythm problems. Monitoring potassium and supporting balance through a diet rich in fruits, vegetables, and legumes, along with kidney and cardiovascular health, helps prevent life-threatening imbalances.
How this connects to other biomarkers
- Low Potassium often co-exists with low Magnesium — potassium replacement is ineffective without correcting magnesium first.
- High Potassium with low estimated Glomerular Filtration Rate (eGFR) points to chronic kidney disease or reduced renal clearance; also rule out specimen hemolysis and review medications (ACE inhibitors, spironolactone).
- Persistent low potassium with high blood pH (metabolic alkalosis) suggests excess aldosterone (primary hyperaldosteronism) or diuretic effect; persistent high potassium with low blood pH (metabolic acidosis) suggests adrenal insufficiency or renal tubular acidosis.
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