Optimization of 25% Sulfosalicylic Acid Protein-to-Creatinine Ratio for Screening of Low-Grade Proteinuria

Table 2

Analytical sensitivity (gradient) and linearity range of 3%, 6%, and 25% sulfosalicylic acid for albumin standard curves, where the protein concentrations were assessed in the modified SSA quantitative method.

SSA percentage (%)	Gradient (slope/sensitivity)	Linearity range (mg/dL)
3	0.0109	4–40
6	0.0196	4–40
25	0.0241	3–50

SSA: sulfosalicylic acid.