Q: Which blood test can be use to monitor the progress or improvement of TTP (Thrombotic thrombocytopenic purpura) while on plasmapharesis?


A; LDH

Lactate dehydrogenase levels are generally used to monitor TTP activity. Plasmapheresis may need to be continued till patients cease to consume platelets. Research protocols have used improvement or normalization of LDH as a measure for ending plasmapheresis.