ANGPT1 and polycystic ovary syndrome: However, Ang-1 serum levels were significantly greater in PCOS women compared with non-PCOS controls at all three time points, on day 3 (43.7 ± 2.6 ng/ml vs. 30.9 ± 4.3 ng/ml, p = 0.02), day of hCG administration (47.4 ± 3.1 ng/ml vs. 34.2 ± 4.5 ng/ml, p = 0.02), and day of oocyte retrieval (49.0 ± 4.3 ng/ml vs. 33.9 ± 6.0 ng/ml, p = 0.04) (Figure 1A).