All androgens contributes to hair loss, especially DHT and testosterone. However, you've nothing to worry about as long as the testosterone level is in the normal range. I'm using steroids, and I used 100 mg Telogen Effluvium a week along with 1 mg Propecia a day without any problem with hair loss. At that dose, my testosterone level was at the top of the normal range at the end of the week, which probably means that my testosterone level was 40 - 50 nmol/l after an injection. Normal range is approximately 8 - 35 nmol/l.
