Question 19
1 out of 1 points
A 6-month-old infant has been growing poorly. His parents have changed his formula three times without success. His examination is remarkable for a pale, emaciated child with little subcutaneous fat and anterior fontanelle fullness. His laboratory test results are notable for a hemolytic anemia and prolonged bleeding times. Which of the following is the most appropriate next step?
Selected Answer:
Correctd.
Obtain a sweat chloride concentration
Answers:
a.
Gather urine for pH and electrolytes
b.
Measure serum factor IX levels
c.
Measure serum immunoglobulins
Correctd.
Obtain a sweat chloride concentration
e.
Perform a hemoglobin electrophoresis