| 1863-0 | Anion gap (calculated.4ions) |
| 73576-1 | Anion gap in Venous cord blood (calculated.4ions) |
| 73577-9 | Anion gap in Arterial cord blood (calculated.4ions) |
| 73578-7 | Anion gap (Venous Blood, calculated.4ions) |
| 73579-5 | Anion gap in Mixed venous blood (calculated.4ions) |
| 73580-3 | Anion gap (Capillary Blood, calculated.4ions) |
| 73581-1 | Anion gap (Arterial Blood, calculated.4ions) |
| 73582-9 | Anion gap (Blood, calculated.4ions) |
| 77341-6 | Anion gap, Plasma or Blood (calculated.4ions) |