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You seem to be having mild increase in urea, creatinine
and potassium levels. They are elevated because of HTN and DM effect on kidneys. You should avoid salt diet. Drink more water, which can help to decrease the values. Avoid much chicken, meat, beef as it reduces urea levels as well. Eat more fresh fruits and green leafy vegetables. Keep your blood pressure and blood sugar in control which will reduce chances of more damage to kidney.