Plain Blood Adult: 5 mLPaediatric: 1.3 mL Urine Urine Creatinine - 10 mL (Second void morning urine specimen)Urine Phosphate - 10 mL (Second void morning urine specimen)Please note that concentrations of phosphate in blood and urine generally increase after a meal. Blood (serum) specimen should be drawn after at least 8 hours of fasting if possible. Second void morning urine specimen should be collected and sent together with blood specimen to the laboratory as soon as possible.
CreatininePhosphateUrine CreatinineUrine Phosphate
Reference intervals for Tmp/GFR
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