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The consumption of electric energy in Brazil in 2018 was 472 GWh, and 28.85% of consumption refers to the residential sector. The Brazilian market for Light Emitting Diode (LED) products grows more than 30% a year, while LED imports have grown from 131 million units in 2015 to 145 million in 2017 (+10.6%). Therefore, the need to improve the technical and conformity assessment requirements for LED bulbs sold in Brazil is evident. This work analyses Electrical and Luminotechnical Parameters in LED lamps considering Brazilian standards analysing some parameters of LED lamps, which employ different topologies in their drivers, when submitted to voltage magnitude variation. Samples are tested on 18 single-base LED lamps with an integrated control device, GLS LED bulbs, available at the Brazilian market. The methodology consists in applying nominals voltages as INMETRO standards determinates. Throughout the tests, measurements are done and compared with the levels established by Brazilian standards. The results show that there are lamps in this study that obtained the certification by regulated Brazilian organization but does not attend to the level determinate by the Brazilian standard, exposing an opportunity for improvement to existing standards and certification process.