What type of menstrual abnormality would be suspected in this patient and which abnormal laboratory test result is consistent with this type of abnormality? “Some people I know with diabetes can take...

What type of menstrual abnormality would be suspected in this patient and which abnormal laboratory test result is consistent with this type of abnormality?

“Some people I know with diabetes can take pills,” says S.C. “Why can’t I take pills instead of having to take insulin?” she asks. What is an appropriate response to her question?