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A calculated estimate of the actual glomerular filtration rate and is based on the serum creatinine concentration, age, sex, and race. The eGFR test is used to screen for and detect early kidney damage and to monitor kidney status. This test may not be accurate for those younger than 18, pregnant, overweight or very muscular person.
Blood levels of the electrolytes depend on the balance between intake and production. Abnormal values are usually seen in patients with kidney disorders. Medication for hypertension and heart diseases can affect the electrolyte levels.
Blood is made up of cellular component and the liquid component called plasma. If blood is left to stand, the cellular component will sediment and the amount it settles in 1 hour is the ESR. Many factors can influence the ESR. In general, the higher the ESR, the higher the chances of a chronic disease. Investigations are then needed to find the disease.
