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It appears that both your FSH and LH levels are within normal range though FSH is slightly less. You should also get Testosterone
and Oestrogen levels done, and if possible semen analysis
as well. Loss of generalised body hair may not be due to testosterone problem but other diseases of hair loss. Do you have axillary and pubic hair. If this is there then may not be testosterone problem but a problem with the skin of beard area, chest which is not responding to testosterone due to less receptor sensitivity. You can wait for a few years and this may improve. You need to get examined for any genetic or congenital diseases by your Endocrinologist
. Have you had fever
and swollen glands behind your jaw anytime in puberty
time. Get the tests done.