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Clinical Chemistry 16: 347-349, 1970;
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Clinical Chemistry, Vol 16, 347-349, Copyright © 1970 by the American Association for Clinical Chemistry

Nomograms for Calculation of Urea Clearance

E. Melvin Gindler 1

1 Department of Pathology, Rockford Memorial Hospital, Rockford, Ill. 61103.

Two nomograms are given for use in calculating standard, C[unknown], or maximum, Cm, urea clearance. The first nomogram calculates the urine flow rate, f, from the urine collection time and volume data. With the second nomogram, values of f and urea nitrogen concentrations in blood serum (or plasma) and urine are used to calculate either C[unknown] or Cm, according to the value of f. There is no intermediate calculation of radicf. Examples of the use of the two nomograms in the calculation of C[unknown] or Cm are given.

Submitted on July 8, 1969
Accepted on August 18, 1969






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Copyright © 1970 by the American Association for Clinical Chemistry.