 In 2005 Stroehle, et al., determined that saliva detection of IgG antibodies against Toxoplasma gondii had a sensitivity and specificity of 98.5% and 100%, respectively.A study published in 1990 demonstrated the diagnostic utility of saliva IgG testing in identifying neurocysticercosis secondary to Taenia solium.In a 2005 study, researchers investigated the accuracy of "Helicobacter pylori" diagnosis in dyspeptic patients using salivary anti-"H. pylori" IgG levels.