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Old 05-28-2014
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Default Serum findings in anemia

From 2014 FRED, answer and explanations please:

A 4-year-old boy is brought to the physician because of slow growth during the past year. He has had recurrent urinary tract infections since the age of 1 year. He is at the 10th percentile for height and 25th percentile for weight. Physical examination shows pallor. Laboratory studies show a normochromic, normocytic anemia and increased serum concentrations of urea nitrogen and creatinine. Urinalysis shows a low specific gravity. Which of the following sets of additional serum findings is most likely in this patient:

Calcium Inorg Phosphorus 1,25-dihydrocholecalciferol Erythropoetin
a. up up up down
b. up up down down
c. up down down up
d. down up up down
e. down up down down
f. down down up up
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Old 05-29-2014
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With such BUN and creatinine indicates child is in renal failure for whatever cause and with renal failure we have everything down with renal function i.e active vit D and EPO and PO4 excreation, calcium reabsorption(also because of decreased absorption from gut).. hence option E IMO.
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