total testosterone in the serum (tser) has the highest serum levels of all androgens and was probably therefore taken into consideration in all pertient studies. nevertheless, only facial hair density is significantly correlated to tser, while linear facial hair growth did not show a significant relation to total testosterone (farthing et al 1982; see knaussmann and christiansen 1988 for a similar result with regard to the type of beard)
beard growth pattern did not correlate to tser.




