A wireless device, a network node and a respective method performed thereby for performing measurements for fast setup are provided. The method performed by the wireless device comprises receiving, during a RACH procedure, a “message 4” (Msg 4), which Msg 4 may be a contention resolution, the Msg 4 comprising a trigger for performing a fast measurement. The method also comprises performing a fast measurement on one or more carrier(s) that the wireless device receives. The method may further comprise sending a measurement report to the network node which sent the Msg 4 to the wireless device.