Figure: 4 TAC §35.81(c)(3)
Interpretation of manual complement fixation test results
Test Results |
Test Interpretation |
1+ 1:10 or lower |
Negative |
2+ 1:10, but less than 2+ 1:20 |
Suspect |
2+ 1:20 or higher |
Reactor |
Key to degree of fixation of complement: 1 + = 25%; 2 + = 50%; 3 + = 75%; 4 + = 100%