A simple guide to help you understand what to expect at your OB-GYN visit. Before or Early Pregnancy(Prenatal Screening)Basic blood testsBlood type testLiver function testUrine testCervical cancer screening (Thin Prep)Infectious disease screening(syphilis, hepatitis B, rubella, HIV) 12~13 Weeks Nuchal translucency (NT) scan,Genetic screening (e.g., Fragile X),First-trimester integrated test. 16..