CRP and gestational diabetes: Another case-control study published in 2017 measured serum ferritin levels at 10–14 and 15–26 weeks of gestation, and found that ferritin levels were positively associated with GDM risk after adjusting confounders including CRP and prepregnancy BMI; the aOR (95% CI) for highest vs lowest quartile was 2.43 (1.12, 5.28) at weeks 10–14 and 3.95 (1.38, 11.30) at weeks 15–26, which was consistent with our findings.