was sind elektrolyte — can a DNA test help?

Electrolytes are charged minerals (sodium, potassium, calcium, magnesium, chloride, phosphate) vital for nerve signals, muscle function, and fluid balance. A DNA test can detect variants in genes related to electrolyte transport (e.g., SLC12A3, KCNJ1, TRPV5), but the clinical utility for the general population is very limited. Most electrolyte imbalances stem from diet, hydration, kidney function, or medications—not common genetics. A DNA test cannot measure current electrolyte levels; a blood test is required. In rare monogenic disorders (e.g., Gitelman syndrome), genetic testing may be diagnostic, but that is specialist territory. For healthy individuals without symptoms, a DNA test for electrolytes lacks evidence and is not recommended. Evidence level: mechanistic/unclear. Always consult a doctor for electrolyte concerns.