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Coulomb drag describes the situation where a current flowing in a so-called "drive" conductor, Coulomb interacting with a "drag" conductor, induces a voltage accros the "drag" conductor. There are already some experimental clues that have attempted to measure Coulomb drag in nanowires \cite{Laroche_2011}, Luttinger systems Yama\cite{Yamamoto_2012} and recently in quantum dots \cite{Hartmann_2015}.  In double quantum dot system Coulomb drag was investigated within the framework of sequential tunneling using the Master equation formalism. In such work, a drag current is obtained when four states of charge are considered and when the tunneling rates depend on energy, i.e., on the charge state. These results were valid when the temperature   of the system is much higher than the tunneling rate. A previous experiment by Hartmann\cite{Hartmann_2015} measured the voltage fluctuations in a double quantum dot setup for a base temperature of $4.2$ K ($360\mu eV$). However, it was not measured the tunneling rates.  
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There are \emph{in-plane} and \emph{out-of-plane} magnetic fields applied of magnitudes $2$ and $0.1$ T, respectively that do not alter the measurements.