NO ESTABLISHED REFERENCE VALUES FOR RANDOM URINE SAMPLES. IT MAY BE INTERPRETED IN CONJUNCTION WITH SERUM PHOSPHORUS, USING BOTH VALUES TO CALCULATE FRACTIONAL EXCRETION OF CHLORIDE.
THE CALCULATION FOR FRACTIONAL EXCRETION (FE) OF PHOSPHORUS IS
FE(P)= ([P(URINE) X CREAT(SERUM)]/[P(SERUM) X CREAT(URINE)])X100
Clinical Utility
EVALUATION OF HYPOPHOSPHATEMIA, HYPERPHOSPHATEMIA OR NEPHROLITHIASIS