A fluidic card assembly (1) comprises an inlet (20) for introducing a fluid to the fluidic card assembly (1), a turbulent flow portion (30) downstream of the inlet (20), the turbulent flow portion (30) comprising a widening fluid channel (31) whereby a fluid introduced via the inlet (20) channel undergoes turbulence, and a laminar flow portion (40) downstream of the turbulent flow portion (30). The laminar flow portion (40) is configured to allow fluid passing from the turbulent flow portion (30) into the laminar flow portion (40) to establish a laminar flow pattern, and is configured to house a biochip (44) such that a fluid in the laminar flow portion (40) may be in contact with the biochip (44).