GAIA Level 3 First Trimester Spontaneous Abortion

**Semantic type:** Classification

**Definition:** GAIA Level 3 First Trimester Spontaneous Abortion is defined by three criteria: first, it does not qualify as either a Level 1 or Level 2 First Trimester Spontaneous Abortion; second, gestational age is within the pre-defined range for the selected abortion definition as assessed by maternal and/or fetal parameters (Level 3) (using Brighton Preterm Birth Gestational Age algorithm); third, a positive urine or blood pregnancy test that becomes negative after 7 days.

**Synonyms:** - Global Alignment of Immunization safety Assessment in pregnancy Level 3 First Trimester Spontaneous Abortion - Level 3 First Trimester Spontaneous Abortion