Table 2.
The Univariate Linear Regression Model of Clinical Factors Associated With Creatinine Difference Measured by Jaffe vs. IDLCMS and Enzymatic vs. IDLCMS
| Jaffe–IDLCMS (P/coefficient) | Enzymatic–IDLCMS (P/coefficient) | |||
|---|---|---|---|---|
| Cr by IDLCMS (mg/dl)*, † | 2.07 × 10−8 | –0.085 | 2.61 × 10−7 | –0.077 |
| Glucose (mg/dl)* | 0.019 | 0.001 | 0.051 | 0.001 |
| Total protein (g/dl) | 0.472 | 0.050 | 0.598 | 0.036 |
| Albumin (g/dl)* | 0.041 | –0.233 | 0.068 | –0.204 |
| Globulin (g/dl)* | 0.022 | 0.167 | 0.057 | 0.123 |
| Potassium (meq/l)*, † | 0.035 | –0.125 | 0.040 | –0.120 |
| Phosphorus (mg/dl)*, † | 0.052 | –0.061 | 0.043 | –0.062 |
*P < 0.05 in Jaffe‐ IDLCMS. † P < 0.05 in enzymatic‐IDLCMS.
IDLCMS, isotope dilution‐liquid chromatography‐mass spectrometry; Jaffe–IDLCMS, difference between Jaffe and IDLCMS; Enzymatic–IDLCMS, difference between enzymatic and IDLCMS.