Therefore, we also had an interest in understanding whether parity, bone density, clinical chemistry and hematology parameters such as serum ALP, creatinine (Cre), pre-albumin (Pre-Alb), coagulation factors including thrombin time (TT), activated partial thromboplastin time (aPTT), D-dimer, and fibrinogen (Fib) level have anything to do with serum vitamin D, GDM, and pregnant adverse effects. The gene discussed is ALB; the disease is gestational diabetes.