Tests to determine the cause of stillbirth may include the following: General examination of the stillborn fetus (eg, physical appearance, weight, length, head circumference [1]) Fetal autopsy, karyotype, and microarray assessments Examination of the placenta Maternal complete blood count (CBC) for evidence of anemia or leukocytosis Kleihauer-Betke test Directed screening for acquired thrombotic disorders, including tests for antiphospholipid antibodies (lupus anticoagulant, anticardiolipin [IgG and IgM], anti-beta2 glycoprotein I [IgG and IgM]) Thyroid-stimulating hormone (TSH) and, if abnormal, free T4 (thyroxine) Diabetes testing (HbA1C) TORCH test (toxoplasmosis [with IgG and IgM], other pathogens [eg, human parvovirus B19, varicella-zoster viruses], rubella, cytomegalovirus, herpes simplex) Rapid plasma reagin (RPR) Drug testing Testing for hereditary thrombophilia is controversial and is not routinely recommended.