Table 1.
Parameters of regression equations for calibration curves and range.
| Compound | a | b | c | d | R 2 a | Range (μg/mL) |
|---|---|---|---|---|---|---|
| GlcNAc | −7.353e −4 | 4.489e −1 | 12.327 | 79.609 | 0.9999 | 25–200 |
| GalNAc | −1.922e −3 | 6.089e −1 | −4.936 | 252.349 | 0.9997 | 10–160 |
For each curve the equation is y = ax 3 + bx 2 + cx + d, where y is the peak area and x is the concentration of the analyte (μg/mL).
a is the third degree constant.
b is the second degree constant.
c is the first degree constant.
d is the intercept.
R 2 a = the correlation coefficient.