Dr. Kenneth W. Kizer and the VA Reform. Dr. Kizer, a physician trained in emergency medicine and Public Health, was appointed by President Bill Clinton as Director of U.S. Veterans Health Administration in 1994.
Results of the fetal fibronectin test are either positive or negative: Positive. A positive result means that fetal fibronectin is present in your cervical fluid. If you have a positive result between weeks 22 and 34, you're at increased risk of preterm labor.
PPVs for trisomies 18 and 13 were 100% and 97.9% for trisomy 21. The authors concluded that. noninvasive prenatal analysis of cfDNA from maternal blood is an accurate advanced screening. test with extremely high sensitivity and specificity for trisomy 21 (>99%) but less sensitivity for. trisomies 18 and 13.