| Summary: | The objective of this work was to establish the reference intervals of sodium and potassium electrolytes in serum and urine in clinically healthy subjects. In daily practice, results are compared with the reference intervals provided by other authors, hence the usefulness and importance of establishing own ranges of reference for each analite appears as evident. The target population was selected by direct sampling. 124 healthy volunteers previously interviewed were evaluated; they were adults of both sexes, between 19 and 59 years of age, without dietary restrictions, and from different areas of Posadas, Misiones. Venous blood was drawn in the morning under fasting conditions. All the individuals collected 24 hour urine. The samples and controls were processed by direct potenciometry with selective electrode for ions (ISE– Easy Lyte–Medica). The following reference intervals are proposed; serum sodium (135–146 mMol/l), serum potassium (3.4–5.0 mMol/l), urinary sodium (68–330 mMol/24 h) and urinary potassium (19–76 mMol/24 h).
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Sodium and potassium electrolytes homeostasis in normotensive population of theposadas city