Type
—
Criterion
—
Prevalence
—
Key Priority
—
Hormonal Pattern Interpretation
| Pattern | Associations | FSH | LH | E2 | Interpretation |
|---|---|---|---|---|---|
Hypergonadotrophic Gonadal failure |
Turner's, POI, gonadal dysgenesis | ↑↑ | ↑↑ | ↓ | Primary ovarian insufficiency |
Hypogonadotrophic Hypothalamic/pituitary |
FHA, Kallmann, hypopituitarism | ↓ | ↓ | ↓ | Central suppression |
Normogonadotrophic Outflow / PCOS |
PCOS, Asherman's, outflow obstruction | N | N/↑ | N | Structural or androgen excess |
Hyperprolactinaemia Prolactin excess |
Prolactinoma, drugs, hypothyroidism | ↓ | ↓ | ↓ | Prolactin inhibits GnRH |