Review Question - QID 108623

A 17-year-old female presents to her pediatrician’s office because she has not yet begun menstruating. She is anxious because all of her friends except her have developed breasts, grown taller, and started menstruation. She has a past medical history of urinary tract infections including an episode of pyelonephritis requiring hospitalization for intravenous antibiotics. The patient is not sexually active. She is 4 feet 9 inches tall and weighs 91 pounds (BMI 19.7 kg/m^2). Her temperature is 98.7°F (37.1°C), blood pressure is 149/93 mmHg, pulse is 84/min, and respirations are 14/min. Physical exam reveals normal heart and lung sounds; pubic hair is Tanner 4 and breast development is Tanner 1. A photograph of the patient is shown in Figure A. Which of the following lab abnormalities would most likely be seen in this patient?