Definition of steroid receptor status for biochemical analysis
| Oestrogen receptor | Progesterone receptor | Androgen receptor | |
|---|---|---|---|
| Amount of receptor expressed in fmol/mg protein. | |||
| Negative | < 6 | < 10 | < 10 |
| Slightly positive | 6–20 | 10–30 | 10–50 |
| Positive | > 20 | > 30 | > 50 |