Figure 10. TgAb Measurements Made by Different Methods. Figure shows the relative TgAb concentrations reported for 143 DTC patient sera with evidence of TgAb interference with serum Tg measurements. Each serum was measured by four different methods each with a different manufacturer-recommended cutoff value for “TgAb positivity” (open bars) and with different experimentally determined (10) functional sensitivity limits (closed bars). From reference 45.