Table 4. The private laboratory Sigma metrics calculation.
| Parameters | TEa source | TEa | Bias (%) | CV (%) | Sigma |
|---|---|---|---|---|---|
| ALT | CLIA | 20.00 | 1.8 | 2.9 | 6.2 |
| Alb | CLIA | 10.00 | 0.3 | 2.0 | 4.7 |
| ALP | CLIA | 30.00 | 1.9 | 6.4 | 4.4 |
| BD | BV desirable | 44.50 | 0.8 | 6.4 | 6.8 |
| BT | CLIA | 20.00 | 2.1 | 3.5 | 5.1 |
| Calcium | BV desirable | 2.55 | 1.2 | 1.4 | 1.0 |
| Cholesterol | CLIA | 10.00 | 0.0 | 1.6 | 6.3 |
| Creatinine | CLIA | 15.00 | 1.3 | 4.2 | 3.3 |
| Glucose | CLIA | 10.00 | 2.9 | 1.8 | 3.9 |
| LD | CLIA | 20.00 | 3.1 | 3.4 | 5.0 |
| Magnesium | CLIA | 25.00 | 1.3 | 4.2 | 5.6 |
| Phosphorous | BV desirable | 10.10 | 2.8 | 1.8 | 4.1 |
| Total Protein | CLIA | 10.00 | 2.1 | 1.7 | 4.6 |
| Triglycerides | CLIA | 25.00 | 0.0 | 2.0 | 12.6 |
| Uric Acid | CLIA | 17.00 | 2.0 | 2.4 | 6.1 |
| Urea | CLIA | 9.00 | 3.1 | 2.6 | 2.3 |
| GGT | BV desirable | 22.10 | 2.9 | 1.5 | 12.8 |
| TEa – total allowable error. CV – coefficient of variation. BV – biological variation. CLIA - Clinical Laboratory Improvement Amendments. 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. | |||||