inactivated serum

in·ac·ti·vat·ed se·rum

serum that has been heated to 56°C for 30 minutes to destroy the lytic activity of complement.
References in periodicals archive ?
Both the positive and negative controls were not inhibited by the heat inactivated serum, as was expected.
The inactivated serum was measured 10 times and the concentration corresponding to the upper 3 SD limit was defined as the detection limit.