Summary In children 28 values for glomerular filtration rate and 25 values for effective renal plasma flow were simultaneously obtained by means of the inulin‐ and PAH‐clearance and by means of a single injection method with 51 Cr‐EDTA and 123 I‐OIH. These were compared in an appropriate statistical model. The results show good agreement of the two methods. The single injection method can therefore be of value in childhood when only values for GFR and effective renal plasma flow are asked or especially if inappropriate urinary collection is expected or bladder catheterisation is contraindicated. It has no place in studies concerned with renal physiology or pathophysiology.
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VÖGELI et al. (1971) studied this question.
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