A 4-year old is scheduled for a routine tonsillectomy. Which of the following lab findings should be reported to the doctor?

D A urine specific gravity of 1.010 A A hemoglobin of $12 \mathrm{gm}$ C A white cell count of $16,000 \mathrm{cu} \mathrm{mm}$ B A platelet count of $200,000 \mathrm{cu} \mathrm{mm}$