Without knowing the unit of measurement it's hard to comment on your numbers. For example, your testosterone is 41, is that 41 ng/dl, 41 pg/ml, etc? There are several units of measurement that are possible.

If you do need testosterone treatment it's not just for libido. Low libido is just one of many possible symptoms, it's one of the more common but you can still have levels that need help and not have that symptom. Testosterone is far more than a libido med.