Serum testosterone and gonadotropin concentrations fall in acute MI

Changes in the serum concentrations of testosterone (dotted line), LH (dashed line), and FSH (solid line) throughout hospitalization in a representative 43-year-old man with an acute MI. All three hormones decreased acutely and then returned to baseline levels during recovery. The dotted horizontal line indicates the lower limit of the normal range for testosterone. The day of transfer from the intensive care unit to the general medical unit is noted. To convert serum testosterone values to ng/dL, divide by 0.0347.