Microtiter Modification of the Complement Fixation Test for Platelet Antibodies

The Aster complement fixation test for the detection and identification of platelet isoantibodies was modified for use in microtiter plates. Results with both methods were identical. The technic presented here has a number of advantages: smaller volumes of reagents are required, more dilutions of sera can be tested with less expenditure of time, and comparison of results with different sera is easier to evaluate.