Fine needle aspiration biopsy (FNA), operated in experienced hands, can determine whether the tumor is malignant in nature with sensitivity around 90%.
Sensitivity and specificity | Sense & Sensitivity | Multiple chemical sensitivity | multiple chemical sensitivity | gluten sensitivity | Antibiotic sensitivity | A comparison of the sensitivity of WMAP with COBE and Penzias and Wilson's Holmdel Horn Antenna |
The presence of other immunoglobulins (especially IgA) and/or complement proteins (especially C4) increases the specificity of a positive test.