An apparatus , comprising: a housing defining an inner volume , the housing having an inlet port in fluid communication with the inner volume and an outlet port in fluid communication with the inner volume, the inlet port configured to receive bodily-fluid from a patient; and an actuator mechanism movably disposed within the inner volume of the housing, the actuator mechanism having a first member and a second member movably disposed, at least in part, in the first member, the actuator mechanism configured to be transitioned from a first configuration to a second configuration to define a pre-sample reservoir in selective fluid communication with the inlet port and configured to receive a pre-sample volume of bodily-fluid, the pre-sample reservoir being collectively formed by the housing and a portion of the actuator mechanism and positioned between a plunger of the first member and a plunger of the second member, the actuator mechanism configured to be moved from a first position to a second position after the pre-sample reservoir receives the pre-sample volume of bodily-fluid, a portion of the actuator mechanism and the housing collectively defining at least a portion of a sample reservoir in fluid communication with the inlet port when the actuator mechanism is in the second position, the sample reservoir configured to receive a sample volume of bodily-fluid via the inlet port, the outlet port being in fluid communication with the sample reservoir and configured to be fluidically coupled to an external fluid reservoir after the sample volume of bodily-fluid is disposed in the sample reservoir to transfer at least a portion of the sample volume of bodily-fluid into the external fluid reservoir. a housing defining an inner volume , the housing having an inlet port in fluid communication with the inner volume and an outlet port in fluid communication with the inner volume, the inlet port configured to receive bodily-fluid from a patient; and an actuator mechanism movably disposed within the inner volume of the housing, the actuator mechanism having a first member and a second member movably disposed, at least in part, in the first member, the actuator mechanism configured to be transitioned from a first configuration to a second configuration to define a pre-sample reservoir in selective fluid communication with the inlet port and configured to receive a pre-sample volume of bodily-fluid, the pre-sample reservoir being collectively formed by the housing and a portion of the actuator mechanism and positioned between a plunger of the first member and a plunger of the second member, the actuator mechanism configured to be moved from a first position to a second position after the pre-sample reservoir receives the pre-sample volume of bodily-fluid, a portion of the actuator mechanism and the housing collectively defining at least a portion of a sample reservoir in fluid communication with the inlet port when the actuator mechanism is in the second position, the sample reservoir configured to receive a sample volume of bodily-fluid via the inlet port, the outlet port being in fluid communication with the sample reservoir and configured to be fluidically coupled to an external fluid reservoir after the sample volume of bodily-fluid is disposed in the sample reservoir to transfer at least a portion of the sample volume of bodily-fluid into the external fluid reservoir. <EOS>