<prompt> 2 year old child with length 85cm and weight of 11kg was found to have serum urea of 49mgdl, serum creatinine 2mgdl What is the estimated GFR of this child, as per Schwartz formula?9184890  <response>: schwartz formula for creatinine clearance : k X length serum creatinine k 0.42GFR 0.42 X 852 17.8 18. 