Fig. 2: Demonstration of the correlation between serum free light chains and kidney function.

Correlation between kappa FLC (A), lambda FLC (B), and FLC (C) ratio and eGFR. Red line demonstrates linear correlation and blue line local regression (loess). The standard reference intervals for kappa FLC (A), lambda FLC (B) and FLC ratio (C) are demonstrated with dashed lines. The y axis for kappa FLC and lambda FLC are truncated at 125 mg/L and FLC ratio at 3.