Table 6. Comparison between bias (%) in different laboratories.
| Parameters | Medical research institute | Zagazig University | Ain Shams University | The private laboratory |
|---|---|---|---|---|
| AFP | 9.3 | 4.2 | -- | -- |
| ALT | 6.7 | 8.7 | 5.9 | 1.8 |
| ALb | 0.2 | 0.6 | 7.2 | 0.3 |
| ALp | 2.3 | 2.7 | 3.9 | 1.9 |
| BD | 5.6 | 2.7 | 8.9 | 0.8 |
| BT | 0.0 | 6.4 | 2.1 | 2.1 |
| Calcium | 2.0 | 4.2 | 0.5 | 1.2 |
| CEA | 1.3 | -- | -- | -- |
| Cholesterol | 6.1 | 3.2 | 1.7 | 0.0 |
| Creatinine | 5.5 | 1.9 | 0.6 | 1.3 |
| Glucose | 1.1 | 1.7 | 1.1 | 2.9 |
| LD | 0.5 | 1.9 | -- | 3.1 |
| Magnesium | 10.1 | 0.5 | 8.0 | 1.3 |
| Phosphorous | 5.9 | 1.3 | -- | 2.8 |
| Potassium | 2.1 | 1.1 | 2.1 | -- |
| Total Protein | 0.3 | 1.7 | 1.4 | 2.2 |
| Triglycerides | 1.6 | 1.4 | -- | 0.0 |
| Uric Acid | 0.7 | 1.0 | 3.0 | 2.0 |
| Urea | 1.9 | 0.0 | 6.3 | 3.1 |
| GGT | 1.6 | 2.3 | 4.6 | 2.9 |
| AFP - alpha fetoprotein. ALT - alanine aminotransferase. Alb – albumin. ALP - alkaline phosphatase. BD – billirubin, direct. BT- bilirubin, total. CEA - carcinoembryonic antigen. LD - lactate dehydrogenase. GGT - gamma glutamyltransferase. | ||||