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Table 2 Ammonium chloride loading test profile

From: Relationship between rickets and incomplete distal renal tubular acidosis in children

  urine pH > 5.5 urine pH < 5.5 2t-test at 95% CI (p)
n (%) 19 (38.00%) 31(62.00%)  
Urine pH, mean (SD) range 6.40 (0.45) 5.7 -7.50 5.10 (0.32) 4.62 - 5.48 11.9275(< 0.001)
Preloading mean(SD) and range of serum HCO3, 19 (0.02), 19 - 20 mmol/L 22 0(0.461)., 22-24 mmol/L. 28.2313 (< 0.001)
3 hours post loading with NH4CL mean(SD) and range of serum HCO3 16 (0.34), 14 - 16 mmol/L 22 (0.58), 21-23 mmol/L 40.893 (< 0.001)
Rate of reduction of HCO3 from pre loading
to 3 hours post loading
3-5 mmol/L 1-2 mmol/L  
24 hours urine calcium mean (SD) 1.62 (0.13)mmol/kg/day 0.12 (0.03)mmol/kg/day 20.4594 (< 0.001)