Table 3. Comparison the Bias % for the biochemical analytes on Cobas 6000 and Cobas C311 from the month of April to September 2023.
| Parameter | April | May | June | July | Aug | Sept | Average | |||||||
| A | B | A | B | A | B | A | B | A | B | A | B | A | B | |
| Albumin | -0.2 | -1.83 | 1.62 | -2.43 | 2.23 | -0.95 | 1.91 | 1.91 | -0.47 | 0 | -2.16 | -1.37 | 0.48 | -0.77 |
| ALP | -0.14 | 1.28 | 0.84 | -1.27 | 1.08 | -2.44 | 1.77 | -0.59 | 0 | 0 | -1.82 | -2.28 | 0.28 | -0.88 |
| SGPT/ALT | -5.6 | -3.01 | 2.18 | 2.18 | 2.11 | 0.49 | -1.7 | 0.85 | -3.52 | 0 | -4.47 | -2.43 | -1.83 | -0.32 |
| SGOT/AST | -6.06 | -7.57 | 1.97 | -1.31 | 1.04 | 0.58 | 0 | -1.29 | -1.02 | -0.76 | 1.08 | 0.36 | -0.49 | -1.66 |
| Bilirubin, Direct | 0.35 | 0.35 | -1.09 | 0 | -2.61 | 0 | 0 | -1.31 | -4.18 | -3.25 | -2.55 | -3.64 | -1.68 | -1.3 |
| Bilirubin, Total | 1.04 | 1.7 | 6.79 | 3.88 | 0.36 | -1.1 | 2.38 | 4.77 | -0.36 | 1.28 | 1.56 | 1.69 | 1.96 | 2.03 |
| Calcium | -1.27 | 0 | -1.02 | 0.17 | 1.89 | 0.71 | -1.67 | -0.83 | -1.63 | 0 | 5.12 | 5.12 | 0.23 | 0.86 |
| Creatinine | 0.98 | 1.96 | 1.58 | 0.52 | -0.76 | -1.68 | 1.63 | 1.63 | 1.57 | 2.1 | 3.09 | 3.09 | 1.34 | 1.27 |
| GGT | 1.35 | -0.27 | 1.82 | 2.73 | 0 | 1.29 | -0.63 | 1.27 | -1.42 | -0.35 | -1.04 | -0.25 | 0.01 | 0.73 |
| Glucose | 3.7 | 0 | -0.68 | 0.68 | -0.87 | 0 | 1.06 | 1.82 | 2.72 | 1.67 | -0.76 | 0 | 0.86 | 0.69 |
| LDL | 0 | 0.43 | -0.34 | 3.09 | 1.96 | 1.47 | 0.99 | -0.99 | 0.6 | 1.02 | -2.66 | -2.66 | 0.09 | 0.39 |
| Phosphorus | -3.55 | 2.03 | 1.22 | 1.89 | -0.13 | 1.24 | 0.55 | 1.39 | 1.63 | 0.65 | 1.2 | 0 | 0.15 | 1.2 |
| Protein, Total | 0.52 | 0.26 | -0.53 | 0 | 1.26 | -0.84 | 0.62 | 0.62 | 0.93 | 0 | 1.65 | 1.01 | 0.74 | 0.17 |
| Triglycerides | -1.98 | -1.48 | 0.19 | 1.37 | -1.37 | -0.31 | -1 | -0.1 | -0.6 | 0 | -0.45 | 0.91 | -0.86 | 0.06 |
| Uric Acid | 0.69 | 0.69 | 0 | 0.3 | -2.62 | -0.12 | -2.7 | -1.35 | -6.5 | -4.47 | 0.35 | 0.35 | -1.79 | -0.76 |
| Urea | -3.54 | 0 | -3.54 | -1.41 | 0.54 | 1.35 | -1.57 | -0.52 | -4.38 | -4.13 | 0 | 0 | -2.08 | -0.78 |
| Cholesterol | -1.42 | -0.56 | 2.94 | -1.26 | 4.93 | 0 | -2.45 | -1.22 | -1.49 | -0.74 | 0.78 | 0.78 | 0.54 | -0.5 |
| HDL | -3.95 | -3.95 | -2.7 | -3.24 | 2.94 | -3.22 | -3.9 | -3.9 | -2.71 | -1.58 | -4.58 | -2.75 | -2.48 | -3.1 |
| Sodium | -0.64 | 0.64 | -0.89 | 0.89 | 0.8 | 1.61 | 0.76 | 1.53 | 0 | 0.67 | 1.61 | 1.84 | 0.27 | 1.19 |
| Potassium | -1.73 | 0.57 | 0.49 | 0.46 | 1.71 | 1.52 | -0.34 | 0.34 | -0.21 | 0.86 | 1.61 | 0.96 | 0.25 | 0.78 |
| Chloride | -0.89 | 0 | -1.94 | -0.12 | -1.09 | -1.7 | -0.8 | 0.34 | -1.98 | -1.38 | 1.75 | 0.87 | -0.82 | -0.33 |
| Note: | ||||||||||||||
| A = Cobas 6000 | ||||||||||||||
| B= Cobas C311 | ||||||||||||||
| SGPT = Serum Glutamic Pyruvic Transaminase | ||||||||||||||
| SGOT= Serum Glutamic Oxaloacetic Transaminase | ||||||||||||||
| GGT = Gamma Glutamyl Transferase | ||||||||||||||
| LDL= Low Density Lipoprotein | ||||||||||||||
| HDL= High Density Lipoprotein |