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Dear Customer
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Regarding your question
What are the normal values of kidney function test ?
The normal value of creatinine ranges from 0.7 to 1.2
The normal value of urea ranges from 5 to 20
How to diagnose kidney problems ?
taking a full medical history
 doing creatinine level
 doing urea level
  clinical examination
doing urine analysis
CBC
kidney ultrasound
doing urine culture
electrolytes level
What are kidney problems ?
urinary tract infection
kidney stones
kidney infections
kidney inflamation
kidney failure
What are the symptoms of kidney disease ?
fever
 difficulty in urination
 increase or decrease of  the frequency of urination
blood per urine
 nausea and vomitting
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