Dynamic RangeWe assessed the dynamic range of the B. pseudomallei i-STAT in a variety of clinically relevant matrices through spike-in assays using purified B. pseudomallei capsule as described in the Methods section. CPS concentrations up to 12.5 μg/mL (250 ng/ assay) were assessed. While the higher CPS concentrations ex- perienced dramatic hook effects (not shown), consistent detec- tion of CPS began at 2.5 ng for each matrix evaluated (Figure 1). The i-STAT consistently detected B. pseudomallei CPS over a >3 log dynamic range.Dynamic range of anti-capsular polysaccharide (CPS) i-STAT in clinically relevant matrices. Ten-fold serial dilutions of serum, urine, whole blood, and plasma spiked with Burkholderia pseudomallei purified CPS were prepared as described in the Methods section. The average of 3 trials of each dilution is graphed, with the standard deviation represented by error bars. Values on the y-axis are ng/assay of purified CPS in 20 μL of each matrix (serum, urine, blood, plasma).