Introduction: If incorrectly managed, dangerous chemical residues produced by clinical analysis laboratories are worrisome. These residues can represent serious environmental and human health hazards if disposed improperly in the sewage system. Currently, the laboratories take over strategies with the potential to minimize the negative environmental impacts and public health risks. To demonstrate the current scenario and contribute to the sustainable development of these laboratories, it is necessary to evaluate the toxicity of hematological equipment´s chemical residue effluents.