Serum lysozyme: evaluation of a nephelometric assay

A nephelometric lysozyme (LZM) assay method was compared to two commonly used enzymatic LZM assay methods. LZM concentrations obtained with the nephelometric method correlated well with those obtained with the spectrophotometric (r = + 0.98) and the lysoplate (r =+ 0.93) methods. The precision of the nephelometric method was 5.1% (CV). The nephelometric LZM assay offers a simple, reproducible and rapid assay method for serum LZM determinations.