are testosterone levels higher in the morning
Testosterone levels are highest in the morning. Blood for testosterone lab tests should be drawn between 7 a.m. and 10 a.m. Based on this blood test, your doctor must determine if your total testosterone level is low.Unfortunately, different laboratories measure total testosterone using different methods.estosterone canât have any effect on your body unless it is floating freely in the blood. A man can have normal or even high levels of total testosterone, but low levels of free testosterone.