Template:Johnsen score table
From Embryology
Johnsen score |
Description |
---|---|
10 | complete spermatogenesis and perfect tubules |
9 | many spermatozoa present but disorganized spermatogenesis |
8 | only a few spermatozoa present |
7 | no spermatozoa but many spermatids present |
6 | only a few spermatids present |
5 | no spermatozoa or spermatids present but many spermatocytes present |
4 | only a few spermatocytes present |
3 | only spermatogonia present |
2 | no germ cells present |
1 | neither germ cells nor Sertoli cells present |
Reference: Johnsen SG. Testicular biopsy score count - a method for registration of spermatogenesis in human testes: normal values and results in 335 hypogonadal males. (1970) Hormones 1(1): 2-25. PubMed 5527187 |