Straightforward, microscale, Ellman's cholinesterase test procedures are presented, useful for screening of novel compounds aiming at neurodegenerative diseases and antidotes towards nerve agents and pesticides. Herein, we detail the different procedure features and set forth guidelines on experimental choices researchers may make. The detailed procedure lowers the costs for Ellman´s test, what is highly desirable for low-budget groups in science-lagging and developing countries.