Table 2.

Intrafollicular concentrations of GDF9, BMP15, and the GDF9/BMP15 heterodimer in small antral follicle fluids from non-PCO and PCO

	All samples (n = 356)	Non-PCO n = 168	PCO n = 188	P
GDF9, pg/mL	3884 ± 138	3498 ± 199	4230 ± 189	P = 0.03
BMP15, pg/mLa	497 ± 33	573 ± 55	431 ± 40	P = 0.10
GDF9/BMP15 heterodimer, AU/mLb	477 ± 23	483 ± 37	473 ± 29	P = 0.88

Values are mean ± SEM. P values show significant differences between non-PCO and PCO.

Abbreviations: BMP15, bone morphogenetic protein 15; GDF9, growth differentiation factor 9; PCO, polycystic ovary.

^a 234 follicle fluids with detectable measurements (109 non-PCO and 125 PCO).

^b 313 follicle fluids with detectable measurements (147 non-PCO and 167 PCO).