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 |
| A clinical score (1-10) for assessing spermatogenesis in a human testicular biopsy. | |
| 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 | |
