TABLE 2.
Complement activity units obtained from the CH50 assay (Diamedix), LIA (Waco), and EIA (Incstar) for total classical complement activity in deficient sera
| Homozygous deficiency | CH50 assaya | LIAb | EIAc |
|---|---|---|---|
| C1 | 0 | 0 | 0 |
| C1 | 0 | 4 | 0 |
| C2 | 3 | 11 | 0 |
| C2 | 3 | 11 | 0 |
| C2 | 0 | 0 | 0 |
| C2 | 0 | 5 | 0 |
| C6 | 0 | 5 | 11 |
| C6 | 0 | 6 | 1 |
| C7 | 2 | 10 | 10 |
| C8 | 0 | 4 | 23 |
| C8 | 0 | 5 | 12 |
| C9 | 0 | 8 | 4 |
| C9 | 0 | 11 | 0 |
| C9 | 0 | 9 | 0 |
a
Complement activity units for the CH50 assay are as follows: <100, low; 100 to 300, normal; >300, high.
b
Complement activity units for the LIA are as follows: <23, low; 23 to 60, normal; >60, high.
c
Complement activity units for the EIA are as follows: <60, low; 60 to 140, normal; >140, high.