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Na 136 mmol/L (normal range 134-146 mmol/L)

K 4.1 mmol/L (normal range 3.4-5.0 mmol/L)

Urea 4.2 mmol/L (normal range 3.0-8.0 mmol/L)

Creatinine levels may become elevated in men as a result of an enlarged prostate that blocks urine flow or from kidney disease.