A 49-year-old man with myeloma was referred for management by the clinical haema-tology team who requested and observed the following biochemistry results analysedon the main automated biochemistry analyser (reference ranges are given in brackets):SodiumPotassiumUreaCreatinineAlkaline phosphataseAlanine aminotransferaseAlbuminTotal proteinBilirubinCalcium131 mmol/L3.6 mmol/L5.6 mmol/L124 μµmol/L135 IU/L42 IU/L30 g/L140 g/L15 μmol/L3.02 mmol/L(135-145)(3.5-5.0)(3.5-6.6)(70-150)(95-320)(5-42)(35-50)(60-80)(<17)(2.12-2.62)(a) What is the electrolyte abnormality in this patient?(b) The sample was subsequently analysed on a direct reading ion-selective electrode forsodium and a result of 144 mmol/L was produced. Explain the difference betweenthe sodium results obtained and state which is the more clinically relevant result.

Electrolytes such as sodium, potassium, calcium, magnesium, chloride, and bicarbonate play an…

Answered: (a) What is the electrolyte abnormality…

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