They illustrated that an IL-8 level of >9.5 ng/mL in ammonitic fluid (AF) obtained via this transcervical collector had a 98% sensitivity, 74% specificity, PPV of 80% and NPV of 98% for identification of IAI and was more accurate than a WCC (≥19 cells/mm3) in AF obtained via amniocenteses in the same patients [108]. Here, CXCL8 is linked to atrial fibrillation.