Accurate and sensitive diagnostics are of utmost importance in the fight against infectious diseases and epidemics. Indeed, without such diagnostics broad-spectrum antibiotics are generally used, resuting in an increased antimicrobial resistance [1,2]. Because laboratories and medical infrastructures are not always available, in particular in developping countries, there is a high need of Point-of-Care (PoC) diagnostic devices. Among other criteria [3], such devices must be low-cost, portable, and automonous. Besides they must work with a small amount of energy, available from a smartphone, a computer or batteries. In order to comply with these criteria, it is shown in this work that the combination of screen-printing and hot embossing technologies provides a convenient way to embed functions such as heating and electrochemical detection within a LAMP (Loop mediated amplification) micro-reactor.